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A solid wooden ball is rotating about an axis passing through its center. If its angular speed if doubled, find by what factor does its rotational kinetic energy change? Find by what factor does the magnitude of its angular momentum change?
air is contained in a vertical piston-cylinder assembly by a piston of mass 50 kg and having a face area of 0.01 m2.
A 5.0g- lead bullet is fired into a fence post. The initial speed of the bullet is 240m/s, How much does the bullets temperature increase
A block of mass 50 kg is free to slide on a horizontal frictionless surface. A constant force F acting 20° above the horizontal is applied to the block. What is the magnitude of the applied force F
If it takes a fish 0.20s to perform evasive action, at illustrate what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
A vertical wall (5.4 m 2.4 m) in a house faces due east. A uniform electric field has a magnitude of 164 N/C. This field is parallel to the ground and points 32° north of east. What is the electric flux through the wall?
Find what is the maximum speed with which a 1350 kilogram car can round a turn of radius 75 meter on a flat road if the coefficient of static friction between road and tires is 0.60
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.596 m. Find the final speed v of the sphere's center of mass
a person rides on a 12-m-diameter ferris wheel that rotates at the constant rate of 6.6 rpm. calculate the magnitude
A man swings froma rope on the top of a building that is30 meters high. He is standing at 10 meters high. what is his velocity at the bottom of his swing
The planet Jupiter has a satellite, Europa, which travels in an orbit of radius 6.710×108 m with a period of 3.55 days. Calculate the mass of Jupiter from this information
Earth's radius is 6.38 × 106 m, and it completes one revolution every day. What is the tangential speed of a person standing on the equator
Two speakers, each with a power output of 0.510 Watt, are mounted facing each other and 33.8 meter apart. Find the total sound intensity a person hears when they are midway between the speakers
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