A 20-kg rock sits atop a 30 meter cliff. How much potential energy does it have?

Which is the one factor that adds to the greenhouse effect? 1. a decrease in the amount of dust in the atmosphere 2. a decrease in the amount of water on Earth's surface 3. an increase in gasses that absorb heat 4.

What is gravity and what are the two factors that determine its strengeth

Granite is a coarse or medium-grained rock that is rich in quartz and feldspar. It is formed when bodies of magma cool and harden deep below the earth.

What is an output force? A. the force a simple machine applies to an object B. the applied force on a system C. the net force on a system D. the force a person applies to a simple machine

Why does changing the shape of an object have no effect on the density of that object?

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching

Why are glass fibers stronger than bulk glass?