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Question1
A 68.0-kg person throws a 0.0490-kg snowball forward with a ground speed of 32.0 m/s. A second person, with a mass of 59.0 kg, catches snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.10 m/s, and the second person is initially at rest. What are velocities of the two people after the snowball is exchanged? Disregard the friction between skates and ice.
Question2
A 27 kg chair initially at rest on a horizontal floor requires a 376 N horizontal force to set it in motion. Once the chair is in motion, a 339 N horizontal force keeps it moving at a stable velocity. The acceleration of gravity is 9.81 m/s^2. What is coefficient of static friction between the chair and the ?oor?
Question3
A 33 kg gun is standing on a frictionless surface. The gun fires a 45.7 g bullet with a muzzle velocity of 316 m/s. The positive direction is that of the bullet.
Compute the momentum of the bullet immediately after the gun was fired.
An isolated copper sphere of radius 4.85cm, at first uncharged, is illuminated by ultraviolet light of wavelength 244nm. The work function for copper is 4.70 eV. What charge does the photoelectric effect induce on sphere.
A 0.49 kg mass at the end of a spring vibrates 9.0 times per second with an amplitude of 0.20 m. Determine the total energy of the system
On a winter day when the temperature is 4.00, the resistance of the carbon resistor is 217.4. Evaluate what is the temperature on a spring day when the resistance is 215.8
Three point charges are located on the positive x-axis of a coordinate system. Charge q1 = 2.0 nCis 2.0 cm from the origin, What is the net force
The Apollo Lunar Module was used to create the transition from the spacecraft to the moon's surface and back. Consider the similar module for landing on the surface of Mars. Use conservation of mechanical energy to answer these questions.
A 2 ton automobile moving with a speed of 60 mph collides with a 10 ton truck at an intersection. find the velocity of the two after the collision
A motorcycle is traveling up one side of a hill and down the other side. Determine the maximum speed that the cycle can have
Mary needs to row her boat across a 200 m-wide river that is flowing to the east at a speed of 1.1 m/s. Mary can row with a speed of 2.4 m/s. What is her speed with respect to the shore
A coil is placed in a changing magnetic field and an emf is induced. What happens to induced emf if the rate of change of magnetic field quadruples.
A ball of mass 0.30 kg is fired with velocity 160 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
The length of a table in the laboratory was measured as 182.36 cm, What is the relative uncertainty of the length, What is the uncertainty of the length
Suppose an electron is accelerated from rest through a difference in potential of V = 6.23 V. Find the speed of the electron after the collision
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