Which of the following would increase the strength of an electromagnet

Try rubbing a plastic pen through your hair, and you'll find that you can pick up a tiny scrap of paper when the pen is about one centimeter above the paper.

The energy of a wave is directly proportional to the square of the ___. D. Amplitude c. crest b. wavelength a. frequency

What happens to speed when wavelength decreases

What is the Volcanic Extrusion "rule"?

Even as a sober driver, you should remain aware of behavior of driver who maybe

A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 * 10³ kilograms. What is the amount of mechanical work done by the vehicle?

All forces are different each exerts a particular type of effect on an object

Witch statement about polymers is true

Two bullets have masses of 3,0 g and 6.0g, respectively. both are fired with a speed of 40.0 m/s. Which bullet has more kinetic energy? What is the ratio of their kinetic energies

What does it mean that a form of energy might take more energy to harness than it provides? Are renewable resources always renewable, or can they become non-renewable? Why aren't renewable resources used for everything that we use energy for?