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A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the red ball after the collision?
Suppose 1.0 mol of a monatomic ideal gas initially at 6.5 L and 290 K is heated at constant volume to 570 K, find the net energy entering the system (the gas) as heat
Two metal disks, one with radius R_1 = 2.55 cm and mass M_1 = 0.850 kg and the other with radius R_2 = 4.90 cm and mass M_2 = 1.57 kg, What is the total moment of inertia of the two disks
An object at rest explodes into three peices of equal mass. One moves east at 20 m/s; What is the velocity of the third piece
express what would be the frequency of vibrations.
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
2 crewmen pull a raft, 1 crewman pulls with a force of 130 newtons at 34 degreees relative to the forward position on the raft. the 2nd crewman on the opposite side pulls at 45 degrees. Illustrate what force should the 2nd crewman pull so that the..
Superman attemps to drink water through a very long straw. With his great strength, Find the maximum height through which he can lift the water
What is the average force exerted on the ball. How fast (in ) must a centrifuge rotate if a particle 6.50 from the axis of rotation is to experience an acceleration of 125,000 's.
How long will it take until the sun has used up all the hydrogen atoms in the core (the central 10%)? That is, what is the main-sequence lifetime of the sun and compare the lifetime of the sun to the current age.
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C), What value of absolute zero does the calibration yield
Choose one part of the photo-electric experiment that cannot be explained by assuming that light is a wave. Why do we need the concept of light as a particle?
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