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A frictionless pulley has the shape of a uniform solid disk of mass 2.80kg and radius 10 cm. A 1.70kg stone is attached to a very light wire that is wrapped around the rim of the pulley and the system is released from rest.
a) How far must the stone fall so that the pulley has 5.40 J of kinetic energy?
b) What percent of the total kinetic energy does the pulley have?
A 0.2 object is swung in a vertical circular path on a string 0.1 m long. The acceleration of gravity is 9.8 m/s^2. If a constant speed of 4.07 m/s is maintained, what is hte tension in string when the object is at the top of the circle? Answer in..
After falling from rest from a height of 35 m, a 0.58-kg ball rebounds upward, reaching the height of 26 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on ball.
A father (m = 65 kg) and son (m = 38 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3.0 m/s after they have separated. How fast would the father be moving.
A defibrillator consists of a 16.7-µF capacitor that is charged to 9.0 kV. how much charge passes through the body tissues
How many protons are in the beam traveling close to the speed of light in the Tevatron at Fermilab
A ladder base is 6m away from a house, and the fully extended ladder is 10m long when it leans against the house
When driving west toward the Rocky Mountains, you see a peak 2.8 degrees above the horizon. Your GPS gives your current elevation as 1500 m , and according to the map, you're 22.5 km (horizontally) from the peak. Find the peaks elevation.
what is the maximum head-start distance the speeder can have? Measure time from the moment the police car starts.
A woman in a movie fires a gun and is pushed backwards. The mass of the bullet is 0.050 kg and the bullet velocity is +850 m/s. What is the recoil velocity of the woman
A gamma ray (a high-energy photon) can produce an electron (e?) and a positron (e+) of equal mass, What minimum gamma-ray energy is required to accomplish this task
A train moving with constant velocity travels 180north in 12 and an undetermined distance to the west. The speed of the train is 36 M/S^2. Find the direction of the train's motion relative to north
Two metal balls are hung from strings. The first ball, 0.09 kg, is pulled to the side and released so that it strikes the second ball with a speed of 1.62 m/s. What is the mass of the second ball
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