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A juggler performs in a room with a ceiling 1.95 m above hand level. What is the maximum upward speed (in m/s) which she can give a ball without letting it hit the ceiling?
A copper wire that is 1 mm thick and 30 cm long is connected to a 1 V battery. What is the power dissipated in the wire at this temperature
Jonathan is riding a bicycle and encounters a hill of height h. At the base of the hill, he is traveling at a speed vi. What is the change in potential energy stored in Jonathan's body
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.
A sphere of copper is subjected to 81.1 MPa of pressure. The copper has a bulk modulus of 130 GPa. By what fraction does the radius of the sphere change
A ball of mass M = 17 kg is suspended from a vertical inextensible string of length l = 1.5 m. A bullet of mass m = M/2 traveling with a horizontal velocity v = 9sqrt(g*L) collides with the ball, What is the velocity of the ball-bullet system
A cement block accidentally falls from rest from the ledge of a 82.4 -m-high building, How much time, at most, does the man have to get out of the way
A Doctor order to prepare a glass for a patient with anti-reflection coating for 400 nm and 700 nm wavelength light. Find the minimum thickness of the coating required for this job
A broad beam of light of wavelength 485nm is incident at 90° on a thin, wedge-shaped film with index of refraction 1.50. An observer intercepting the light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. By..
An electron is accelerated by a constant electric field of magnitude 285 N/C. a. Find the acceleration of the electron (N) b. If the string can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the string breaks.
A thin rod of length L and negligible mass can pivot about oneend to rotate in a vertical circle. A heavy ball of mass m isattached to the other end. how much work does its weight do on it
Object 1 has a mass m1 and a velocity 1 = (2.87 m/s). Object 2 has a mass m2 and a velocity 2 = (3.01 m/s). The total momentum of these two objects has a magnitude of 18.0 kg • m/s and points in a direction 66.5° above the positive x-axis. Find out m..
A woman inside an elevator is standing on a scale. Before the elevation it starts moving the scale shows 50 kg, calculate the acceleration of the elevator if when it starts moving upward the scale reads 70kg. What will the reading of the scale be ..
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