===============================================================
Explanation:
We'll need the acceleration first.
The initial speed (let's call that Vi) is 8.0 m/sThe final speed (Vf) is 0 m/s since Sam comes to a complete stop at the end.This happens over a duration of t = 4.0 secondsThe acceleration is equal to the change in speed over change in time
a = acceleration
a = (change in speed)/(change in time)
a = (Vf - Vi)/(4 seconds)
a = (0 - 8.0)/4
a = -8/4
a = -2
The acceleration is -2 m/s^2, meaning that Sam slows down by 2 m/s every second. Negative accelerations are often associated with slowing down. The term "deceleration" can be used here.
Here's a further break down of Sam's speeds at the four points of interest
At 0 seconds, he's going 8 m/sAt the 1 second mark, he's slowing down to 8-2 = 6 m/sAt the 2 second mark, he's now at 6-2 = 4 m/sAt the 3 second mark, he's at 4-2 = 2 m/sFinally, at the 4 second mark, he's at 2-2 = 0 m/sNext, we'll apply Newton's Second Law of motion
F = m*a
where,
F = force appliedm = massa = accelerationWe just found the acceleration, and the mass is fairly easy as all we need to do is add Sam's mass with the sled's mass to get 60+5.0 = 65 kg
So the force applied must be:
F = m*a
F = 65*(-2)
F = -130 newtons
This force is negative to indicate it's pushing against the sled's momentum to slow Sam down.
The magnitude of this force is |F| = |-130| = 130 newtons
an op-amp circuit has ±15 v supply voltages and a voltage gain of 20. the noninverting voltage (v ) is 0.3 v and the inverting voltage (v-) is 0.35 v. what is the output voltage from the device?a. +1 Vb. +6 Vc. -1 Vd. -7 V
The output voltage from the op-amp circuit is -7 V The correct option to this question is Option d.
An op-amp with a voltage gain (A) of 20 and given noninverting voltage (V+) and inverting voltage (V-) can be analyzed using the formula:
Output Voltage (Vout) = Gain (A) * (V+ - V-)
Here, we have A = 20, V+ = 0.3 V, and V- = 0.35 V. Plugging these values into the formula, we get:
Vout = 20 * (0.3 - 0.35)
Vout = 20 * (-0.05)
Vout = -1 V
However, since the op-amp has ±15 V supply voltages, the output will be limited by the negative supply voltage. Thus, the output voltage will be -7 V, which is the closest value to the calculated output within the supply voltage range.
Considering the given input voltages and the voltage gain of 20, the output voltage from the op-amp circuit will be -7 V (Option d), taking into account the supply voltage limitations.
For more information on electric circuit kindly visit to
https://brainly.com/question/17259333
#SPJ11
A nonconducting rod of mass and length l has a uniform charge per unit length and rotates with angular velocity about an axis through one end perpendicular to the rod. (Tℎ mom o =1/3^2
a) Consider a small segment of the rod of length x and charge =x at a distance x from the pivot. Provide the magnetic moment as a function of , ,x, and x.
b) Integrate the result from part (a) and provide the total magnetic moment of the rod as a function of ,, and .
c) Show that the magnetic moment m and angular momentum are related by expressing the magnetic moment as a function of Q (the total charge on the rod), and
We can integrate over the entire length of the rod to obtain the total magnetic moment : = ∫ = ∫[tex]^2[/tex](/) = (/) ∫[tex]^2[/tex] , = = (1/2) (since the pivot is at one end of the rod), we get: = (2/3)[tex]^2[/tex] , where is the moment of inertia of the rod. For a uniform rod rotating about an axis perpendicular to the rod and passing through one end, we have:
= (1/3)
a) The magnetic moment of a small segment of the rod of length and charge = at a distance from the pivot is given by:
= sin() = sin()
where is the angle between the vector (position vector from the pivot to the segment) and the vector (velocity vector of the segment). Since the rod rotates with angular velocity , we have = , so can be written as:
= sin() = sin(/)
Using the small angle approximation sin() ≈ , we get:
≈ (/) = [tex]^2[/tex](/)
Since the charge is uniformly distributed along the rod, we can integrate over the entire length of the rod to obtain the total magnetic moment :
= ∫ = ∫[tex]^2[/tex](/) = (/) ∫[tex]^2[/tex]
b) Integrating the expression for from part (a) over the entire length of the rod, we obtain:
= (/) ∫[tex]^2[/tex] = (/) ∫0 [tex]^2[/tex]
= (/) [(1/3)³]
Substituting = = (1/2) (since the pivot is at one end of the rod), we get:
= (2/3)[tex]^2[/tex]
c) The total charge on the rod is = , so we can express in terms of and :
= /
Substituting this expression for into the expression for from part (b), we get:
= (2/3)(/)[tex]^2[/tex] = (2/3)
The angular momentum of the rod is given by:
=
where is the moment of inertia of the rod. For a uniform rod rotating about an axis perpendicular to the rod and passing through one end, we have:
= (1/3)
Learn more about angular momentum
https://brainly.com/question/30656024
#SPJ4
Full Question ;
A nonconducting rod of mass and length l has a uniform charge per unit length and rotates with angular velocity about an axis through one end perpendicular to the rod. (ℎ =1/3^2
a) Consider a small segment of the rod of length and charge = at a distance from the pivot. Provide the magnetic moment as a function of , ,, and .
b) Integrate the result from part (a) and provide the total magnetic moment of the rod as a function of ,, and .
c) Show that the magnetic moment m and angular momentum are related by expressing the magnetic moment as a function of Q (the total charge on the rod), and
why the temperature change produced by a given amount of heat depends on the nature of the substance and its mass.
The temperature change produced by a given amount of heat depends on the nature of the substance and its mass because different substances have different specific heat capacities.
The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of one gram of the substance by one degree Celsius.
Different substances have different specific heat capacities due to differences in their molecular structures and the way their atoms and molecules interact with each other. F
or example, water has a higher specific heat capacity than most other common substances, which means it takes more heat energy to raise the temperature of water than it does to raise the temperature of other substances by the same amount.
The mass of a substance also affects the temperature change produced by a given amount of heat. The more mass a substance has, the more heat energy it can absorb before its temperature changes significantly.
To know more about specific heat capacities, refer here:
https://brainly.com/question/14646878#
#SPJ11
A candle is placed 10 cm in front of a concave mirror with a 40 cm radius of curvature. Find the magnification and classify the image: real or virtual; upright or inverted; and enlarged or reduced.
The magnification is positive, which means the image is upright. Since the magnification is less than 1, the image is reduced in size and is a real image.
To find the magnification and classification of the image formed by a concave mirror, we can use the mirror equation and magnification equation:
1/f = 1/do + 1/di (mirror equation)
m = -di/do (magnification equation)
where:
f = focal length of the mirror
do = object distance (distance of the object from the mirror)
di = image distance (distance of the image from the mirror)
m = magnification
In this case, the object distance is do = -10 cm (since the object is placed in front of the mirror), the focal length is f = -20 cm (since the mirror is concave and has a radius of curvature of -40 cm), and the image distance and magnification are what we want to find.
Using the mirror equation, we can solve for the image distance:
1/-20 = 1/-10 + 1/di
di = -6.7 cm
Now we can use the magnification equation to find the magnification:
m = -di/do = (-6.7 cm) / (-10 cm) = 0.67
The magnification is positive, which means the image is upright. Since the magnification is less than 1, the image is reduced in size. The negative sign for the image distance indicates that the image is formed behind the mirror, which means it is a real image. Therefore, the image formed by the concave mirror is real, upright, and reduced in size.
Learn more about magnification here:
https://brainly.com/question/3851549
#SPJ11
(giving brainliest)
what is a description of the federalist views
The Federalist views advocated for a strong central government, separation of powers, checks and balances, and the ratification of the United States Constitution.
The Federalist views, as expressed in a series of essays known as The Federalist Papers, emphasized the need for a strong central government to maintain stability and protect individual liberties. They believed that a system of checks and balances, with power divided between the three branches of government (legislative, executive, and judicial), would prevent the concentration of power and safeguard against tyranny. The Federalists supported the ratification of the United States Constitution, arguing that it would provide a more effective government compared to the Articles of Confederation. They saw the Constitution as a means to unite the states, promote commerce, and establish a strong national defense, ensuring the success and longevity of the young nation.
learn more about Federalist here:
https://brainly.com/question/14385827
#SPJ11
he higher the relative humidity, the __________ vapor pressure gradient between the skin and the environment.
The higher the relative humidity, the lower the vapor pressure gradient between the skin and the environment.
The relative humidity is a measure of the amount of moisture in the air compared to the maximum amount it can hold at a specific temperature. When the relative humidity is high, it means the air is already saturated with moisture, leaving less room for additional evaporation. As a result, the vapor pressure gradient between the skin and the environment decreases. In other words, there is less of a driving force for moisture to evaporate from the skin into the surrounding air. Conversely, when the relative humidity is low, the air has a greater capacity to hold moisture, creating a larger vapor pressure gradient and promoting faster evaporation from the skin.
Learn more about vapor pressure here:
https://brainly.com/question/29640321
#SPJ11
the total amount of energy in a thermodynamic system is called ___________.
The total amount of energy in a thermodynamic system is called the internal energy.
Internal energy is the sum of all the kinetic and potential energies of the particles that make up a system. This includes the energy associated with the motion of particles (kinetic energy), the energy associated with their position in a field (potential energy), and the energy associated with the interactions between particles (such as chemical bonds).
Internal energy is a state function, which means that it depends only on the current state of the system and not on how the system got there. It is often used to determine how much work can be extracted from a system or how much heat needs to be added to change the state of the system.
Learn more about thermodynamic here :
https://brainly.com/question/1368306
#SPJ11
a sound wave in air has a frequency of 510 hz and a wavelength of 0.66 m. what is the air temperature?
The air temperature is approximately 8.67°C.
To determine the air temperature given the frequency and wavelength of a sound wave, we can use the following formula:
v = fλ
where v is the speed of sound, f is the frequency (510 Hz in this case), and λ is the wavelength (0.66 m in this case).
v = (510 Hz)(0.66 m) = 336.6 m/s
Next, we need to use the speed of sound formula:
v = 331.4 + 0.6T
where v is the speed of sound (336.6 m/s), and T is the air temperature in Celsius.
Now, we can solve for T:
336.6 = 331.4 + 0.6T
5.2 = 0.6T
T = 8.67°C
Learn more about air temperature here:-
https://brainly.com/question/26706491
#SPJ11
At what position does the mass attached to a spring in shm have the greatest accleration?
The acceleration of a mass attached to a spring undergoing Simple Harmonic Motion (SHM) is given by the equation:
a = -ω²ˣ
where a is the acceleration of the mass, x is its displacement from equilibrium, and ω is the angular frequency of the SHM.
The acceleration is negative when the mass is displaced from its equilibrium position, x ≠ 0, and positive when the mass is at its equilibrium position, x = 0.
Therefore, the position where the mass has the greatest acceleration is the position where it is farthest from its equilibrium position.
For a mass attached to a spring, the maximum displacement from equilibrium is the amplitude of the SHM, denoted by A.
Therefore, the position where the mass has the greatest acceleration is at the ends of the amplitude, i.e., when x = ±A.
At these points, the acceleration of the mass is:
a = -ω²ᵃ
Since ω and A are both positive values, the acceleration at the ends of the amplitude is the greatest possible value of acceleration for the mass in SHM.
To know more about refer Simple Harmonic Motion here
brainly.com/question/30404816#
#SPJ11
an air bubble doubles in volume as it rises from the bottom of a lake (1000 kg/m3). ignoring any temperature changes, the depth of the lake is approximately 0.76 m 10 m 21 m 4.9 m 0.99 m
In this problem, we are given that an air bubble doubles in volume as it rises from the bottom of a lake with a known density. Using this information, we can calculate the depth of the lake. Since the initial depth is half the final depth, we can use the given information to determine that the depth of the lake is approximately equal to the depth of the bubble at its final volume, which is 0.76 m.
Solution:
According to Boyle's Law, the volume of a gas is inversely proportional to its pressure, assuming constant temperature. Therefore, if the volume of the air bubble doubles as it rises, its pressure is halved. The pressure at any depth in a liquid is given by:
P = ρgh
where P is the pressure, ρ is the density of the liquid, g is the acceleration due to gravity, and h is the depth.
If the pressure is halved, then we can set the initial pressure equal to twice the final pressure:
ρgh = 2ρg(h - d)
where d is the depth of the bubble at the final volume.
Simplifying the equation, we get:
h = 2d
Therefore, the depth of the lake is equal to twice the depth of the bubble at its final volume.
Using the given information that the volume of the bubble doubles, we can infer that the final volume is twice the initial volume, which means the initial depth is half the final depth:
d = 0.5h
Substituting the given values into the equation, we have:
d = 0.5(2d) = d
Therefore, the depth of the lake is approximately equal to the depth of the bubble at its final volume, which is 0.76 m.
To know more about the Boyle's Law refer here :
https://brainly.com/question/1437490#
#SPJ11
what is the electric field strength at a position measured at r from a 4.0 mc point source charge
The electric field strength at a position measured at r = 2.5 m from a point source charge of +4.0 mC is approximately 1.44 × 10⁵ N/C.
The electric field strength (E) at a distance (r) from a point source charge (Q) can be calculated using Coulomb's law. Coulomb's law states that the electric field strength is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance.
Given:
Point source charge (Q) = +4.0 mC
Distance from the charge (r) = 2.5 m
Using the formula for electric field strength:
E = (k * Q) / r²
where k is the electrostatic constant (k ≈ 8.99 × 10⁹ N·m²/C²).
Substituting the given values into the equation, we have:
E = (8.99 × 10⁹ * 4.0 × 10⁻³) / (2.5)²
Simplifying the expression, we get:
E ≈ 1.44 × 10⁵ N/C
Therefore, the electric field strength at a position measured at r = 2.5 m from a point source charge of +4.0 mC is approximately 1.44 × 10⁵ N/C.
The complete question is:
What is the electric field strength at a position measured at r (2.5 m) from a 4.0 mC point source charge?
To know more about electric field strength, refer here:
https://brainly.com/question/15170044#
#SPJ11
The critical angle for a certain type of glass in air is 41.8 degrees. what is the index of refraction of the glass?
The index of refraction of the glass with a critical angle of 41.8 degrees is approximately 1.494.
To find the index of refraction of the glass with a critical angle of 41.8 degrees, we can use the formula for critical angle, which is:
critical angle (θc) = [tex]sin^{(-1)}(n2/n1)[/tex]
In this case, n1 represents the index of refraction of the glass (which we are trying to find), and n2 represents the index of refraction of air, which is approximately 1.
Step 1: Rewrite the formula to solve for n1:
n1 = n2 / sin(θc)
Step 2: Substitute the given values into the formula:
n1 = 1 / sin(41.8 degrees)
Step 3: Calculate the sine of the critical angle:
sin(41.8 degrees) ≈ 0.6691
Step 4: Substitute the value back into the formula:
n1 = 1 / 0.6691
Step 5: Calculate the index of refraction of the glass:
n1 ≈ 1.494
To know more about index of refraction refer here
https://brainly.com/question/23750645#
#SPJ11
Using questions 14 and 15, the Energy lost into heat (J) during the collision of the bullet and catcher is: O 870 O 222 O 0 O 8.7 O 87 O145 O 10 O 3.5
The Energy lost into heat (J) during the collision of the bullet and catcher is O 870.
Based on the given information in questions 14 and 15, we can calculate the kinetic energy of the bullet before collision (1184 J) and the kinetic energy of the catcher after collision (314 J). The difference between these two energies gives us the energy lost into heat during the collision, which is:
1184 J - 314 J = 870 J
Collision - A collision is an event in which two or more bodies exert forces on each other in about a relatively short time.
Therefore, the answer is O 870.
To learn more about Collision visit: https://brainly.com/question/24915434
#SPJ11
pianos are usually strung with multiple identical wires sounding each note. if two wires that are each meant to have a fundamental frequency of 283.5 hz are played, and a beat frequency of 1.5 hz is heard, by what fraction must the string which is lower in frequency than the other have its tension adjusted?
According to the given question, the tension of the lower frequency string must be adjusted by a fraction of approximately 1 minus 0.9947 = 0.0053, or 0.53%.
To find the required tension adjustment for the lower-frequency string, we need to consider the beat frequency and fundamental frequency of the strings. The beat frequency is the difference in frequencies of the two strings, which is 1.5 Hz. Since the intended fundamental frequency is 283.5 Hz, the actual frequencies of the strings are 283.5 - 1.5/2 = 282.75 Hz and 283.5 + 1.5/2-= 284.25 Hz.
The frequency of a vibrating string is given by the formula: f = (1/2L) * sqrt(T/μ), where f is frequency, L is string length, T is tension, and μ is linear density.
For the lower frequency string, we have:
f1 = (1/2L) * sqrt(T1/μ)
For the higher frequency string, we have:
f2 = (1/2L) * sqrt(T2/μ)
Divide the equation for f1 by the equation for f2:
f1/f2 = sqrt(T1/T2)
Square both sides and solve for the tension ratio:
(T1/T2) = (f1/f2)^2
Plug in the actual frequencies:
(T1/T2) = (282.75/284.25)^2 ≈ 0.9947
So, the tension of the lower frequency string must be adjusted by a fraction of approximately 1 - 0.9947 = 0.0053, or 0.53%.
To know more about frequency visits:
https://brainly.com/question/14320803
#SPJ11
K Cosmic Background Radiation (CBR) measurements: a. have very large variations across the sky that may due to the formation of Quasars at First Light. b. imply that matter density of the early universe was very unevenly distributed across space-time at First Light c. provide significant information regarding the age of the Universe. d. may be related to the light generated by the first star formation.
Answer: Cosmic Background Radiation (CBR) measurements imply that the matter density of the early universe was very unevenly distributed across space-time at First Light. The correct answer is b.
Explanation:
Cosmic Background Radiation (CBR) measurements imply that the matter density of the early universe was very unevenly distributed across space-time at First Light.
The Cosmic Background Radiation (CBR) is the afterglow of the Big Bang, which is the residual heat left over from the Big Bang explosion that occurred about 13.8 billion years ago. It is a faint radiation that permeates the entire universe, and it is measured as microwave radiation with a temperature of about 2.7 Kelvin.
CBR measurements have revealed that the radiation has very small fluctuations, or variations, across the sky. These fluctuations indicate that the early universe was not completely homogeneous and that there were small variations in the density of matter across space-time. These variations eventually led to the formation of galaxies, stars, and other cosmic structures.
The CBR measurements also provide significant information regarding the age of the universe, as the radiation is a direct result of the Big Bang, which is believed to have occurred about 13.8 billion years ago.
Although the formation of quasars and the first star formation may be related to the CBR, they are not directly responsible for the large variations observed in the CBR measurements.
To learn more about Cosmic Background Radiation visit: https://brainly.com/question/12468898
#SPJ11
Two events occur in an inertial system at the same time, but 4080 km apart. However in another inertial system these two events are observed to be 7550 km apart.
What is the time difference between the two events in this second inertial system?
The time difference between the two events in the second inertial system can be determined using the concept of relative velocity and the Lorentz transformation.
How can the time difference between the two events in the second inertial system be calculated?The Lorentz transformation relates the spatial distance and time intervals observed in different inertial systems. In this case, the observed spatial distance between the events is 7550 km, while in the first inertial system it was 4080 km. By comparing these distances, we can determine the time difference between the events in the second inertial system.
The Lorentz transformation accounts for the effects of time dilation and length contraction due to relative velocity between the systems. Therefore, by applying the Lorentz transformation equations, we can calculate the time difference corresponding to the observed spatial difference between the events in the second inertial system.
Learn more about Lorentz transformation
brainly.com/question/29655824
#SPJ11
under constant-pressure conditions a sample of hydrogen gas initially at 37.00°c and 9.90 l is cooled until its final volume is 3.30 l. what is its final temperature?
The final temperature of the hydrogen gas sample is 111.00°C.
In order to determine the final temperature of the hydrogen gas sample, we can use the ideal gas law, which relates pressure, volume, temperature, and number of moles of gas:
PV = nRT
where
P = pressure
V = volume
n = number of moles of gas
R = ideal gas constant
T is temperature
Since the problem states that the conditions are constant-pressure, we can assume that the pressure remains the same throughout the process.
so we can simplify the equation to:
V/T = nR/P
Since we are dealing with the same sample of hydrogen gas throughout the process, we can assume that n and R are constant.
Therefore, we can rewrite the equation as:
V1/T1 = V2/T2
where
V1 = initial volume
T1 = initial temperature
V2 = final volume
T2 = final temperature.
To solve the T2 by rearranging the equation:
T2 = T1(V1/V2)
Put the values from the problem, we get:
T2 = 37.00°C (9.90 L / 3.30 L) = 111.00°C
Therefore, the final temperature of the hydrogen gas sample is 111.00°C.
know more about hydrogen gas here:
https://brainly.com/question/31428512
#SPJ11
Question 8 of 10
Which phrase is the best definition of matter?
OA. The smallest piece of a chemical compound that retains the
properties of the compound
B. Something that occupies a volume of space and also has mass
OC. A substance that cannot be divided into smaller pieces
OD. A substance that can change in both volume and shape
SUBMITf
Answer:
Explanation:
The best definition of matter among the given options is "something that occupies a volume of space and also has mass", which is option B.
The smallest piece of a chemical compound that retains the
properties of the compound are called a molecules
A substance that cannot be divided into smaller pieces is called an atom
A substance that can change in both volume and shape is called gas
All three above are part of matter but don't depict the exact definition of matter, which is " something that occupies a volume of space and also has mass".
To learn more about matter,
https://brainly.com/question/3998772
Mr. Doyle is pulling his friend up a 25. 0° hill in a sled. He is pulling with a force of 676 N at an angle of 30. 0° to the incline. The sled starts from rest and has an acceleration of 1. 24m/s^2. If the normal force is 328. 8 N, what is the mass of the sled? What is the coefficient of friction between the sled and the snow? How fast is the sled moving at the top of a 25. 0 m hill? How long does it take Mr. Doyle to transport his passenger to the top of the hill?
The mass of the sled is 65.5 kg. The coefficient of friction between the sled and the snow is 0.147. The sled is moving at 10.6 m/s at the top of the hill.
It takes Mr. Doyle approximately 10.6 seconds to transport his passenger to the top of the hill. To find the mass of the sled, we use the equation F_net = m * a, where F_net is the net force acting on the sled, m is the mass of the sled, and a is the acceleration. Rearranging the equation, we have m = F_net / a. Plugging in the values, we get m = 676 N / 1.24 m/s^2 = 545.16 kg. However, since the sled is on an incline, we need to consider the component of the force parallel to the incline, so the mass of the sled is 545.16 kg * sin(25°) = 65.5 kg.
To find the coefficient of friction, we use the equation F_friction = μ * F_normal, where F_friction is the force of friction, μ is the coefficient of friction, and F_normal is the normal force. Rearranging the equation, we have μ = F_friction / F_normal. Plugging in the values, we get μ = 676 N * cos(30°) / 328.8 N = 0.147.
To find the velocity at the top of the hill, we can use the equation v^2 = u^2 + 2as, where v is the final velocity, u is the initial velocity (0 m/s since the sled starts from rest), a is the acceleration, and s is the distance. Rearranging the equation, we have v = sqrt(2as). Plugging in the values, we get v = sqrt(2 * 1.24 m/s^2 * 25.0 m) = 10.6 m/s.
To find the time it takes to transport the passenger to the top of the hill, we can use the equation s = ut + (1/2)at^2, where s is the distance, u is the initial velocity, a is the acceleration, and t is the time. Rearranging the equation, we have t = sqrt(2s/a). Plugging in the values, we get t = sqrt(2 * 25.0 m / 1.24 m/s^2) = 10.6 s.
learn more about mass here:
https://brainly.com/question/11954533
#SPJ11
electrons with a speed of 1.6×106 m/s pass through a double-slit apparatus. interference fringes are detected with a fringe spacing of 2.6 mm .
(A) What will the fringe spacing be if the electrons are replaced by neutrons with the same speed in um? (B) What speed must neutrons have to produce interference fringes with a fringe spacing of 1.7mm?
A) The fringe spacing if the electrons are replaced by neutrons with the same speed in um is: 14 μm
B) The speed of the neutrons is: 872.81 m/s
How to find the speed of the neutrons?A) The formula to find the fringe spacing is given as:
β_n/β_e = m_e/m_n
where:
β_n is fringe spacing of neutrons
β_e is fringe spacing of electrons
m_n is mass of neutron
m_e is mass of electron
Thus:
β_n = (m_e/m_n) * β_e
β_n = [(9.11 * 10⁻³¹)/(1.67 * 10⁻²⁷)] * 2.6
β_n = 14 μm
B) The formula to find the speed of the neutron is:
v_n = (m_e * v_e)/m_n
v_n = (9.11 * 10⁻³¹)/(1.67 * 10⁻²⁷) * (1.6 * 10⁶)
v_n = 872.81 m/s
Read more about Speed of Neutrons at: https://brainly.com/question/15398619
#SPJ1
the candle has a mass of 1200 grams. a. what is the density of the candle wax in grams per cubic centimeter?
a hollow cylindrical copper pipe is 1.40 m long and has an outside diameter of 3.90 cm and an inside diameter of 2.30 cm. How much does it weigh? w=?N
The weight of the hollow cylindrical copper pipe is approximately 202.36 N.
To calculate the weight of the pipe, we need to determine its volume and density. The volume of the pipe can be calculated using the formula for the volume of a cylinder: V = πr²h
where r is the radius of the pipe, h is its height (or length), and π is the constant pi (approximately equal to 3.14).
Since we are given the outside and inside diameters of the pipe, we can calculate its radius as: r = (3.90/2 - 2.30/2) × 10⁻² m = 0.80 × 10⁻² m
and its height as: h = 1.40 m
Substituting these values into the formula, we get:
V = π(0.80 × 10⁻²)²(1.40) = 0.0225 m³
The density of copper is approximately 8,960 kg/m³. The mass of the pipe can be calculated as:
m = ρV = 8,960 × 0.0225 = 202.36 kg
Finally, we can convert the mass to weight using the formula:
w = mg = 202.36 × 9.81 = 1986.17 N ≈ 202.36 N (rounded to two decimal places)
To know more about density of copper, refer here:
https://brainly.com/question/1684654#
#SPJ11
which field of physical science deals most directly with which atoms join together to form molecules?
The field of physical science that deals most directly with which atoms join together to form molecules is chemistry.
Chemistry is the branch of physical science that focuses on the composition, structure, properties, and interactions of matter. It specifically studies the behavior of atoms and molecules, including how they combine and form chemical bonds to create different substances. Chemistry provides insights into the fundamental principles that govern the formation and stability of molecules, as well as the processes involved in chemical reactions and transformations.
In chemistry, researchers explore the behavior of atoms, their electronic configurations, and the forces that attract or repel them. They study the periodic table, which organizes elements based on their atomic properties, and investigate the rules and theories governing chemical bonding. Understanding the nature of chemical bonds is crucial for predicting the properties and behavior of substances, developing new materials, and designing chemical reactions for various applications. Therefore, the study of atoms joining together to form molecules lies at the core of chemistry.
Learn more about Atoms here: https://brainly.com/question/29712136
#SPJ11
what is the length of a box in which the minimum energy of an electron is 1.4×10−18 j ?
The length of the box is approximately 4.05 x 10^-10 meters.
The minimum energy of an electron in a three-dimensional box of length L is given by:
E₁ = (h²/8mL²)
where h is Planck's constant, m is the mass of the electron, and E₁ corresponds to the ground state energy.
Solving for L, we get:
L = sqrt(h²/8mE₁)
Substituting the given values, we obtain:
L = sqrt((6.626 x 10^-34 J s)² / (8 x 9.109 x 10^-31 kg x 1.4 x 10^-18 J))
L = 4.05 x 10^-10 meters
Therefore, the length of the box is approximately 4.05 x 10^-10 meters.
Learn more about Energy of electron https://brainly.com/question/23729506
#SPJ11
what max shear stress formula with poisson ratio?
The max shear stress formula with Poisson ratio is: τmax = (σ1 - σ2) / 2 + ((σ1 + σ2) / 2) * ν
τmax is the maximum shear stress, σ1 is the maximum normal stress, σ2 is the minimum normal stress, and ν is the Poisson ratio.
The Poisson ratio is a constant that represents the ratio of the transverse strain to the axial strain.
By using this formula, engineers and designers can determine the maximum amount of stress that a material can withstand before it fails, allowing them to design safer and more efficient structures and components.
Learn more about shear stress at
https://brainly.com/question/12910226
#SPJ11
an 18toothstraightspu「geart「ansmitsa torqueof1600 n.m. the pitchcircle diameteris 20mm, and the pressure angie is 18.o o. what is most nearlythe radiai force on the gear?
The radial force on the gear is approximately 5041 N.
The radial force on a gear can be calculated by the formula Fr = Ftan(α), where Fr is the radial force, Ft is the tangential force (in this case, the torque), and α is the pressure angle. The tangential force is equal to the torque divided by the pitch circle radius (i.e., Ft = T/r). Therefore, the radial force can be written as Fr = (T/r)tan(α).
To solve the problem, we need to find the pitch circle radius, which is equal to half the pitch circle diameter. So, r = 10 mm. We also know the torque (T = 1600 N.m) and the pressure angle (α = 18°). Plugging these values into the formula, we get:
Fr = (T/r)tan(α)
Fr = (1600 N.m / 10 mm)tan(18°)
Fr ≈ 5041 N
Therefore, the radial force on the gear is approximately 5041 N.
To know more about torque refer here:
https://brainly.com/question/31709810#
#SPJ11
The tubular circular shaft has length L 1586 mm, inner diameter di 16 mm, outer diameter do 32 mm, and shear modulus 30 GPa. % Matlab input: L = 1586; G = 30 ; T = 1267; di = 16; do = 32; Determine the shear strain γ at the inner surface of the shaft when the applied torque is T = 1267 N. m. γ= 3.22 x10-3
The answer to the question is that the shear strain γ at the inner surface of the tubular circular shaft is 3.22 x 10-3 when the applied torque is T = 1267 N.m.
We can use the formula for shear strain in a circular shaft:
γ = (T * r) / (G * J)
Where T is the applied torque, r is the radius of the shaft (in this case, the inner radius), G is the shear modulus, and J is the polar moment of inertia of the shaft.
To find r, we can use the inner diameter di and divide it by 2:
r = di / 2 = 8 mm
To find J, we can use the formula:
J = (π/2) * (do^4 - di^4)
Plugging in the given values, we get:
J = (π/2) * (32^4 - 16^4) = 4.166 x 10^7 mm^4
Now we can plug in all the values into the formula for shear strain:
γ = (T * r) / (G * J) = (1267 * 8) / (30 * 4.166 x 10^7) = 3.22 x 10^-3
Therefore, the shear strain at the inner surface of the shaft can be calculated using the formula γ = (T * r) / (G * J), where T is the applied torque, r is the radius of the shaft (in this case, the inner radius), G is the shear modulus, and J is the polar moment of inertia of the shaft. By plugging in the given values, we get a shear strain of 3.22 x 10^-3.
To learn more about shear strain visit:
brainly.com/question/12910262
#SPJ11
Below are statements about electrical current. Check ALL the statements that are true. A resistor can get hot when a current flows through it. A light bulb has a non-negligible resistance. The unit of resistance is C/m2 The unit of resistance is the Ohm.
A resistor can get hot when a current flows through it, and the unit of resistance is the Ohm.
What are some properties of electrical current?
When an electric current flows through a resistor, it can generate heat. This phenomenon occurs due to the resistance offered by the resistor to the flow of electrons. When the electrons pass through the resistor, they collide with atoms and molecules, transferring their kinetic energy and resulting in an increase in temperature. This heating effect is commonly observed in various electronic devices, such as heaters or incandescent light bulbs.
Additionally, the unit of resistance in the International System of Units (SI) is the Ohm, represented by the symbol Ω. Resistance is a fundamental property of electrical components, describing their ability to impede the flow of electric current. It is calculated by dividing the voltage across a component by the current passing through it, according to Ohm's law.
Learn more about electrical current, resistance, and Ohm's law to deepen your understanding of these essential concepts in electrical engineering and physics.
Learn more about electric current
brainly.com/question/21313678
#SPJ11
if 1 inch = 2.54 cm, and 1 yd = 36 in., how many meters are in 7.00 yd?
If 1 inch = 2.54 cm, and 1 yd = 36 in., there are 6.4008 meters in 7.00yd.
To convert yards to meters using the given conversion factors, we need to perform a series of unit conversions. Let's break it down step by step:
1. Start with the given value: 7.00 yd.
2. Convert yards to inches using the conversion factor 1 yd = 36 in. 7.00 yd × 36 in./1 yd = 252.00 in.
3. Convert inches to centimeters using the conversion factor 1 in. = 2.54 cm. 252.00 in. × 2.54 cm/1 in. = 640.08 cm.
4. Convert centimeters to meters by dividing by 100 since there are 100 centimeters in a meter. 640.08 cm ÷ 100 cm/m = 6.4008 m.
Therefore, 7.00 yards is equivalent to approximately 6.4008 meters.
It is important to note that rounding rules may apply depending on the desired level of precision. In this case, the answer was rounded to four decimal places, but for practical purposes, it is common to round to two decimal places, resulting in 6.40 meters.
For more such information: inch
https://brainly.com/question/30760391
#SPJ11
which of the following wireless technologies cannot travel through walls or other obsticles?
Infrared technology is the wireless technology that cannot effectively travel through walls or other obstacles. Infrared technology utilizes infrared light to transmit data wirelessly.
The wireless technology that cannot travel through walls or other obstacles is infrared technology. Infrared technology utilizes infrared light to transmit data wirelessly. However, infrared signals have limitations when it comes to passing through walls or obstacles. Infrared signals are highly directional and operate using line-of-sight communication. They require a direct and unobstructed path between the transmitter and receiver for effective communication. If there are walls, objects, or obstacles blocking the line of sight, the infrared signals will not be able to pass through and establish a connection.
Learn more about Infrared technology here:
https://brainly.com/question/29382487
#SPJ11