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A woman on a bridge 83.3 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 8.34 m more to travel before passing under the bridge. The stone hits the water 4.65 m in front of the raft. Find the speed of the raft.
A very long, straight solenoid with a cross-sectional area of 6.00cm squared is wound with 40 turns of wire per centimeter, What is the average induced emf in the secondary coil
A solenoid 10.0 cm in diameter and 75.4 cm long is made from copper wire of diameter 0.100 cm, What power must be delivered to the solenoid if it is to produce a field of 7.60 mT at its center
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
A playground merry go round of a diameter 6m and mass 240 kg is rotating at 12 rev/min about a frctionless vertical axle. Facing the axle, a 30kg child hops on to the merry go round and manages to sit down on its ledge. What is the new angular spe..
A series RCL circuit includes a resistance of 291 ?, an inductive reactance of 685 ?, and a capacitive reactance of 409 ?. What is the voltage of the generator
Suppose your 50.0 mm focal length camera lens is 53.5 mm away from the film in the camera. How far away is an object that is in focus
The outer edge of the grooved area of a long-playing record is at a radial distance 35 cm from the center; What is the radial speed of the needle
A digital camera has 10 megapixels and each pixel has a depth of 32 bits. In units of megabytes calculate how much storage is needed for one image
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
Find the critical angle for an optical fiber whose core has n value of 1.50 and whose cladding has n value of 1.15
The average density of the planet Neptune is 1644 kg/m3. The acceleration of gravity on its surface is 11.32 m/s2. Calculate the average radius of Neptune
A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
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