A ball flies through the air. Right before it hit the ground, it's peed is 10 meters/second and it has 500 joules of kinetic energy. The mass of the ball is ___ kilograms

which of the following best describes the amount of natural resources found here in the united states. coal is the only natural resources found in abundance in the US. Natural resources here are lacking and must all be imported to the us.

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection?

An apple is placed on a kitchen counter. How could the movement of the particles in the apple be decreased? A. Put it in the refrigerator B. Eat it for dinner C. Put it in the microwave D. Put it in the sunlight.

When the brakes on his truck fail, the driver steers it up a runaway truck ramp. as the truck rolls up the ramp, it slows to a stop. what happens to the truck's kinetic energy, its energy of motion?

A solenoid field is: Increased with an increased current flow Entirely within the coil Located outside the coil only Never zero

You are in the lab and are given two rods set up so that the top rod is directly above the bottom one. The two straight rods 50-cm long are separated by a distance of 1.5-mm each with 15 A of current passing through them.

What is the explanation for feather beds being warm

A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 47 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 354 J?

Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight.

A canoeist on a lake throws a 0.145 kg baseball at 20.0 m/s to a friend in a different canoe. Each canoe with its contents has a mass of 120 kg, and is at rest initially.