Which of the following is the reason for the widespread use of fossil fuels? O A. They contain a great deal of energy.
o B. They are a renewable source of energy.
C. They are not harmful to the environment.
D. They are usually found in a liquid form.

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

The ability to make things happen is also called a. heat b. force c. matter d. energy