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A proton (atomic mass 1 u) with a speed of 800 m/s collides elastically with another proton at rest. The original proton is scattered at 60° from its original direction. What are the speeds of the two particles after the collision?
q1. a 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal
A trolley bus whose mass is 104 kg takes 10 s toreach a speed of 8 m/s starting from rest. What is the average current drawn by the bus
A high-speed drill reaches 2300rpm in 0.51s. What is the drill's angular acceleration
A spacecraft is in circular Earth orbit at 6000 altitude. By how much will its altitude decrease if it moves to a new circular orbit where its orbital period is 5% lower
A college student is working on her physics homework in her dorm room. Her room contains a total of 6x 10^26 gas molecules. As she works, her body is converting chemical energy into thermal energy at a rate of 125 W.
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
Can you please help me set this problem up? Suppose that now you want to make a scale model of the solar system using the ball bearing .0014 m to represent the sun. (a) How far from it would you place a sphere representing the earth?
The tank is shelling at a target that is 4km away and 60m above ground. If the shell is being fired at 30degrees above the horizontal, determine the release speed of the shell
A loudspeaker is placed between two observers who are 115 m apart, along the line connecting them. how far is the speaker from each observer
An electron is in a certain energy state in a one-dimensional,infinite potential well from x = 0 to x =L = 250 pm. What is the change in the electron's energy
A rock is thrown vertically upward with a speed of 15.0m/s from the roof of a building that is 70.0m above the ground. What is the speed of the rock just before it strikes the ground
Four identical masses of 1.7 each are located at the corners of a square with 1.7 sides. What is the net force on any one of the masses
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