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An object is moving in simple harmonic motion with amplitude 0.28 m and total energy 2.5 J. By some means its amplitude is increased to 0.34 m. What is the total energy of the system now?
2 hollow conducting cylindrical shells (radius of 1 cm and 2 cm). The inner cylinder carries a current of 5 A outwards. what is the magnitude of the magnetic field at radius of 2.5 cm
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=59600 N. What is the magnitude of the lift force
An automobile cooling system holds 16 L of water. How much heat does it absorb if its temperature rises from 20C to 86C
The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s. At what angle upstream should the driver head the boat
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
It is possible to produce artificial gravity on a space station by having the station rotate. Explain how this would work. What would be some benefits and drawbacks to this approach?
Blocks A, B, and C are placed as in the diagram below and connected by ropes of negligible mass. What is the weight of block
A centrifuge is rotating at 10,000 revolutions/minute. It is brought to rest in 4.00 seconds under a constant acceleration. Determine the initial angular velocity of the centrifuge in rad/sec
A bat flies toward a wall, emitting a constant sound of frequency 2.00 rm kHz. This bat hears its own sound plus the sound reflected by the wall.
A proton is travelling to the right at. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision? What is the direction of the pro..
A 5kg sphere moves at 20m/s makes a perfectly inelastic collision with a second sphere that is at rest. What is the mass of the second sphere
A piano wire with mass 2.65g and length 79.0cm is stretched with a tension of 34.0N. Calculate the average power carried by the wave
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