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A runner sprints around a circular track with circumference 400m. If he completes one lap in 45s, what is his average angular velocity?
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. What impulse was delivered to mass m
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 2 meters, What is the kinetic energy of the box at the bottom of the ramp
A string is wrapped around a pulley of radius 3.60cm , and a weight hangs from the other end. calculate the angular acceleration of the pulley
A 20.0-kg package is dropped from a high tower in still air and is "tracked" by a radar system. Determine the force of air resistance on the package
An electric motor rotating a workshop grinding wheel at 1.06 102 rev/min is switched off. How long does it take the grinding wheel to stop
7.4 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 68 psi. calculate the average kinetic energy of a helium atom
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 2.6 x 10-7 C/m2, the plates are separated by a distance of 1.4 x 10-2 m. How fast is the electron moving just before..
An object is placed 6.00cm to the left of a converging lens of focal length 8.00 cm. obtain the position of the final image
A shopper pushes a cart 49 m south down one aisle and then turns 90.0° west and moves 11 m. What is the smallest possible displacement of the shopper
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 4 Ohms
A boy is practicing tennis by hitting a ball at a wall. He hits the ball at 0.91 m above the ground. How high is the ball when it hits the wall
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