Which statement about coal is true? When burned, coal produces pollutants that are released into the air. Coal will always stay plentiful in the United States. Mining coal improves the environment. Burning coal does not pollute the air.

Saturn has an orbital period of 29.46 years. In two or more complete sentences, explain how to calculate the average distance from Saturn to the sun and then calculate it.

Explain why it is important to check your brake fluid regularly. explain what happens to the fluid when you step on the brake of a car and how that fluid then acts to make the car slow down.

Air is being blown into a spherical balloon at the rate of 1.68 in. 3/s. Determine the rate at which the radius of the balloon is increasing when the radius is 4.70 in. Assume that π = 3.14.

In what ways does a river carry its load?

A 10kg ball is thrown into the air. it is going 3m/s when thrown. How much potential energy will it have at the top?

Two objects of mass 0.2 kg and 0.1 kg, respectively, move parallel to the xaxis, as shown above. the 0.2 kg object overtakes and collides with the 0.1 kg object. immediately after the collision, the ycomponent of the velocity of the 0.

You are standing 10 meters from a light source. Then, you back away from the light source until you are 20 meters away from it. From your perspective, what has happened to the intensity of the wave? A. It has decreased by a factor of two. B.

Relate real life phenomenon of mechanic

What is one example of biomass

What is the approximate weight of the air inside the tire in English Engineering Units (tire outside diameter = 49", rim diameter-22", tire width-19" see: tire side view. ndf?