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A 23-g bullet traveling 230 m/s penetrates a 2.0-kg block ofwood and emerges cleanly at 170 m/s. If the block is stationary ona frictionless surface when hit, how fast does it move after the bullet emerges.
An infinite line of positive charge lies along the y axis, with charge density ? = 1.60 ?C/m. Find the magnitude of the net torque exerted on the dipole
A charged particle is injected at 153 m/s into a 0.0623-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 1.40 and a maximum acceleration of 250 . Part A What is the frequency of the wave? Part B What is the amplitude of the wave?
The potential difference across a coil is 11V at an instant when the current through the coil is decreasing at a rate of 38A/s . What is the coil's inductance
A beam of light is emitted 8.2cm beneath the surface of a liquid and strikes the surface 7.2cm from the point directly above the source. what can you say about the index of refraction of the liquid
Preparing to throw baton A in the air, you hold it at the midpoint and give it a twist with your forearm and wrist that applies a torque of 1.4 m·N for a time interval of 0.50 s. What would be the moment of inertia
The heating element of a clothes dryer has a resistance of12.7 Ohms. A voltage of 240 V is connected across the heatingelement. What is the current in the heating element?
A proton, initially traveling in the +x-direction with a speed of 5.00×105m/s, enters a uniform electric field directed vertically upward, What is the strength of the electric field
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler running at a velocity of 4.5 m/s grabs him. find the mass of the receiver
During heavy rain, a rectangular section of a mountainside measuring 2.8 km horizontally, 0.80 km up along the slope, What is the mass of the mud sitting above an area of 4.0 m2 in that section
An intergalactic rock star bangs his drum every 1.30 s. A person on earth measures that the time between beats is 2.30 s. How fast is the rock star moving relative to the earth
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in geosynchronous orbit
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