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An asteroid of mass 2.3×10^5kg , traveling at a speed of 21km/s relative to the Earth, hits the Earth at the equator tangentially, and in the direction of Earth's rotation. Use angular momentum to estimate the percent change in the angular speed of the Earth as a result of the collision.
two balls A and B are thrown from the top of a vertical cliff. Ball A is thrown horizontally reaching the ground in 3.5 s. what is the height of the cliff
A 2.30-g bullet embeds itself in a 1.40-kg block, which is attached to a spring of force constant 780N/m, Find the time for the bullet-block system to come to rest
Two gliders are tied together by a string after they are connected together by a compressed spring on an airtrack. find the mass of Glider B
A metal sphere of mass M and radius R is charged up so that its surface is at an electric potential V. What is the electric potential at the center of the sphere
Determine magnitude of the force
An artillery shell of mass 10.00 kg, lying at rest on the ground, accidentally detonates, exploding into three pieces of shrapnel. Calculate the speed of the third piece of shrapnel
a ball with mass 1kg is dropped from a height of 6m. the ball is caught by a person 2m above the ground. calculate the potential energy of the ball relative to the ground
Earthquakes generate sound waves inside Earth. Unlike a gas, Earth can experience both transverse (S) and longitudinal (P) sound waves. how far away did the earthquake occur
A tetherball leans against the smooth, frictionless post to which it is attached. What is the force the pole exerts on the ball
During a severe storm in Palm Beach, Fla., on January 2, 1999, 33 inches of rain fell in a period of nine hours. estimate the average upward force exerted by one square meter of ground to stop the falling raindrops during the storm
The fresh water behind a reservoir dam is 15.0 m deep. A horizontal pipe 2.50 cm in diameter passes through the dam 7.5 m below the water surface, What volume of water flows out of the pipe in 4.0 hours
An open-open organ pipe is 67.9 cm long. AN open-closed pipe has an essential frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe.
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