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An electron moves from one plate to another across which there is a potential difference of 2000 V.
Find the velocity with which it strikes the positive plate.
Find the velocity if the electron is replaced by a proton which is moving from the positive toward the negative plate.
A car in stop-and-go traffic starts at rest, moves forward 19 in 8.0 , then comes to rest again. The velocity-versus-time plot for this car is given in the figure. What distance does the car cover in the first 4.0 seconds of it motion?
make Use of a 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
what happens to speed of sound in air if you quadruple the temperatur of the air, How many times larger does it become
Two express trains started 5 minutes apart. Starting from rest, each is capable of a maximum speed of 160km/h after uniformly accelerating over a distance of 2.0 km. How far ahead is the first train when the second one starts
An object with a mass of 500g is attached to a spring. The system is moving in simple harmonic motion with an amplitude of 0.020m, What is the frequency of the system
A stone is dropped into a river from a bridge at a height h above the water. Another stone is thrown vertically down at a time t after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?..
The flywheel of a steam engine runs with a constant angular speed of 116 rev/min. How many rotations does the wheel make before coming to rest
What is the final temperature of the heating element
Two satellites are in circular orbits around a planet that has radius 9.00x10^6m. One satellite has mass 65.0 kg, orbital radius 8.00×10^7 m, What is the orbital speed of this second satellite
A storage tank 30 m high is filled with gasoline. Calculate the force that acts on a square access hatch at the bottom of the tank measures .5 m by .5 m
A flat sheet of ice has a thickness of 2.0cm. It is on top of a flat sheet of crystalline quartz thathas a thickness of 1.1cm. How far (in cm) would it have to travel invacuum
q1. an observer moving toward earth with a speed of 0.97 notices that it takes 5min for a person to fill her car with
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