The input work done on a machine is 9.63 * 103 joules, and the output work is 3.0 * 103 joules. What is the percentage efficiency of the machine?

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.

What type of rays would you expect to be used frequently at a hospital to make medical diagnoses? A. X-rays B. UV rays C. microwaves D. gamma rays

How fast would a 2-kilogram object need to move to have the same kinetic energy as a 4-kilogram object moving at 8 meters per second?

A 100g mass is swung around a tube 50 times in 1 minute. A. Calculate the angular velocity of the 100 g mass.

Angle AOB is 2 radians. If the radius OA of the circle is 10 units, what is the length of the arc AB

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.