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You and a friend are playing tennis. Earth is the object of reference.
part A: What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 32 m/s?
part B: At what speed must your 0.32-kg tennis racket move to have the same magnitude momentum as the ball?
part C: If you run toward the ball at a speed of 4.4 m/s, and the ball is flying directly at you at a speed of 32 m/s, what is the magnitude of the total momentum of the system (you and the ball)? Assume your mass is 60 kg.
a 3 kg cylinder falls vertically from rest in a very tall, evacuated tube 20 m above the surface of the earth. what is the kinetic energy just before it hits the earth
A rod of 2.0-m length and a square (2.0 mm x 2.0 mm) cross section is made of a material with a resistivity of 6.0 x 10 ^-8 ohms m. What is heat generated in the rod
A block-spring system oscillates with amplitude of 3.40 cm. The spring constant is 250 N/m and the mass of the block is 0.500 kg. Decide the mechanical energy of the system. Decide the maximum speed of the block.
The cutoff wavelength for a metal is found to be 300. nm. Calculate the maximum velocity of the emitted electrons
Light from a helium-neon laser (= 633 nm) is utilized to illuminate two narrow slits. The interference pattern is observed on a screen 3.5m behind the slits. Eleven bright fringes are seen, spanning a distance of 50mm. What is the spacing (in mm) amo..
What is the direction of the induced current in a wire loop that is over a magnetic field, in which the magnetic field is increasing but the loop is not moving?
A 10.0-kg mass is located at the (1.00 m)i + (2.00 m)j + (2.00 m)k. A 5.00-kg mass is located at (-1.00 m)i + (1.00 m)j + (1.00 m)k. Determine the moment of inertia of this system about an axis through the origin parallel to the x-axis
A particle attached to a spring with k = 51 N/m is undergoing simple harmonic motion, and its position is described by the equation x = (6.0 m)cos(8.1t), Estimate what is the maximum speed of the particle
A thin metallic spherical shell of radius 42.6 cm has a total charge of 6.95, What is the electric field at a distance of 14.4 cm from the center of the spherical shell
q. a speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. the belt of
a ruler is accurate when the temperature is 25deg c. when the temperature drops to -20deg c the ruler shrinks and no
A 0.015 kg record with a radius of 15 cm rotates with an angular speed of 33(1/3) rpm. Find the angular momentum of the record
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