a hammer falls off a roof and strikes the ground with a certain kinetic energy. If it fell from a roof twice as tall, how ouwld its kinetic energy compare? Explain.

1. What is a thermal conductor? Give an example. 2. Why do metals often feel cool to the touch? 3. Design a way that you would use a thermal conductor in your life?

Sunlight strikes a solar panel, which is then used to power the lights in a house. What are the energy transformations taking place in this system? O A. Thermal energy to chemical energy to kinetic energy O B.

The law of conservation of mass states that if matter is destroyed on one side of the equation, other matter must be created on the other side. true false

What are the functions of proteins in organisms?

As a new electrical technician, you are designing a large solenoid to produce a uniform 0.160 {/rm T} magnetic field near the center of the solenoid. You have enough wire for 4200 circular turns. This solenoid must have a length of 1.

A __ is used to measure air pressure.

What happens to sound waves after they are received by our ears?

Which of the following chemical equations demonstrates that atoms are conserved during a chemical reaction?

How can an objects momentum be calculated

Give 10 examples of units you might use or see in any given day