How high would a 20 kg mass have to be raised to have a gravitational potential energy of 1,000 J?

Box 2 is pulled up a rough incline by box 1 in an arrangement as shown in the figure below. how many distinct forces are doing work on box 2?

Which of the following statements about gemstones is true? Choose one: A. Emerald is a gemstone variety of the common mineral corundum. B. In order to be considered precious or semiprecious, a gemstone must be transparent. C.

What are two challenges that both the waste management system and the packaging of food and drink are designed to overcome?

How does the number of each type of particle in a sodium ion compare with the number of each type of particle in a sodium atom?

An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4. Os?

A 3 kg bowling ball is thrown onto a mattress. If it takes 0.3 seconds to stop the ball using a force of 24 N, what was the initial velocity of the bowling ball when it first touched the mattress?

What is a false statement? The electric field strength on the surface of a charged conductor depends on the surface charge density. The net charge of the interior of a charged conductor is zero.

Which description tells the length of time it takes for a planet to revolve around the sun? A) the length of its year B.) the length of its day C.) the length of its month D.) the length of its decade I think it's B.), Am I correct?

I throw a 1 kg rock at 5 m/s. How much energy does it have?

The region around a magnet that exerts magnetic force is called an