suppose you and your friend are on the moon. will you be able to hear any sound produced by your friend?

Determine for which class of lever the output force is always greater than the input force. for which class is the output force always less than the input force?

Anna will wear a black dress when she attends her cousin's wedding. Which color (s) does the dress absorb?

When an object has a negative charge, which of these describes the electric field surrounding the object? A. It's neutral. B. It gets stronger away from the object. C. It becomes positive away from the object. D.

What makes the earth spin?

A Carnot engine, operating between hot and cold reservoirs whose temperatures are 800.0 and 400.0 K, respectively, performs a certain amount of work W1. The temperature of the cold reservoir is then lowered to 200.

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water?

This is a machine consisting of two wheels of different sizes that rotate together. It is a modified lever.

A source from which organisms generally take elements is called a/an A. biotic community. B. reservoir. C. exchange pool. D. food web.

Jill has a mixture of sand and iron fillings. The mass of the mixture is 250 g. Jill uses a magnet to seperate the two substances. Then she measures the mass of the sand as 150 g what should be the mass of the iron fillings

Ca (OH) 2 is__ An acid A base A salt