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A tennis player hits the ball with her racket. Compare the force exerted by the racket on the ball to that exerted by the ball on the racket during the collision between the ball and the racket is one force larger than the other or is they equal in magnitude to each other? Explain does this relationship of the magnitudes of the two forces change at any time during the collision?
A parallel beam of light from a He-Ne laser, with a wavelength of 658 nm, falls on two very narrow slits 0.050 mm apart. How far apart are the fringes in the center of the pattern on a screen 2.3 m away?
a piece of copper wire is formed into a rectangle. The length of the rectangle is 3m and the width is 2m. what is the average electrical energy dissipated in the resistance of the wire
The 75 kg man is falling at 15 m/s! In an attempt to stop his fall, the brake shoe is pressed against the spinning pulley with a force of 1000 N. how long does it take to stop the man's fall
A turntable is switched from 4.71 rad/s (45rpm) to 3.49 rad/s(331/3) and the platter rotates through an angle of 11.5 rad inreaching the new angular speed, What is angular accelerationof the platter
in other cases there is a clear break between the rainbow orders. the spacing of ruled lines on a diffraction grating
It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). What is the angular speed of the earth
Two parallel square metal plates (side length: 13 cm) are separated by a dielectric material with a dielectric constant 3.9 and a thickness of 2.4 mm. The plates are connected to a 11 V power source and allowed to fully charge.
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
A 150-N sled is pulled up a 28 degree slope at a constant speed bya force of 100N. What is the coefficient of kinetic friction between sled and slope
A particle with charge of 4 microcoloumbs is at the origin, another identical particle is placed 2 m from the origin on the positive x-axis and another 2 m on the positive y-axis. (1) Provide a sketch with vectors representing the forces on the ch..
A curling stone with a mass of 7 kg moves across the ice at a speed of 1.35 m/s in the positive x direction. What is the speed and direction of stone 2 after the collision
A cop car drives at 30m/s toward the scene of a crime, with its siren sounding (f = 2125 Hz.) Estimate the frequency heard by people at the crime scene as the siren approaches and the frequency heard as the siren moves away from people.
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