What kind of energy source transforms heat energy from the Earth into mechanical and electrical energy?

a. Geothermal

c. Solar

b. Hydro-electric

d. Turbine

When a hammer exerts a force on a nail, how does the amount of force compare with that of the nail on the hammer?

If you can simply pour sand into a cup then why is it not a liquid?

The rumble feature on a video game controller is driven by a device that turns electrical energy into mechanical energy. This device is best referred to as

If the cross-sectional area of a wire is decreased while all other factors remain the same, how will the resistance change? A. It will increase B. It will decrease. C. It will go to zero. D. The cross-sectional area does not affect the resistance.

We humans are on track to increase the amount of CO2 in the atmosphere so that the concentration in the future more than double the atmospheric CO2 concentration that existed for the few millennia before the industrial revolution.

As protostars continue to contract, their cores become hotter and more dense until what process begins ...

Emily jogs 3 laps at the track to warm up. She jogs at 5 mph. Then she runs 3 more laps at 7 mph. What is true about her average speed and her average velocity?

Which of the following elements are the most reactive? beryllium, calcium, magnesium, barium?

1.) State which definition of power below is correct. A.) the energy transferred per hour. B.) the energy transferred. C.) the energy transferred per second. D.) the force over a distance. 2.

Science and technology are closely related, but not the same. Which of the following is most likely a result of technology, not science?