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Two identical pucks are on an air table. Puck A has an initial velocity of 2.0 m/s in the +x-direction. Puck B is at rest. Puck A collides elastically with puck B and A moves off at 1.0 m/s at an angle of 60° above the x-axis. What is the speed and direction of puck B after the collision?
In the Bohr model, the electron in H has a circular orbit. For an isolated atom, the only force on the electron is the strictly radial electrical force. Does this violates the uncertainty principle
X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. Find (a) the Compton shift at this angle, (b) the energy of the scattered x-ray, and (c) the energ..
A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. What force does the seat exert on you
a race car driver must average 199.0 kmh over the course of a time trial lasting ten laps. if the first nine laps were
Illustrate what is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
Two pipes of equal length are each open at one end. Each has the fundamental frequency of 500 Hz at 325 K. In one pipe the air temperature is increased to 330 K. If the two pipes are sounded together, what beat frequency results.
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
Tension is maintained in a string as in the figure below. The observed wave speed is v = 21.0 m/s when the suspended mass is m = 3.00 kg. What is the mass per unit length of the string
A cockroach of mass m lies on the rim of a uniform disk of mass 6 m that can rotate freely about its center like a merry-go-round. find the angular velocity of the cockroach-disk system
Consider the (infinite) midplane between two charges of equal magnitudes and oppoisite signs. If the charges are + and - q, what is the electric flux through the midplane
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
At this point, he throws a forward pass 45.0 yards straight downfield perpendicular to the line of scrimmage. Illustrate what is the magnitude of the football's resultant displacement?
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