Hydroelectric power is produced by

A. falling water that turns a turbine.

B. tides that pour through a dam barrier.

C. hot water that comes from deep underground.

D. electric current that flows across a dam.

If element X has 31 protons, how many electrons does it have?

What is the gravitational force excerted on an object called?

The study of the living and non living things in a environment is

The equation for impulse is I = Ft, where I is impulse, F is force, and t is time. The units for impulse are N. s. a. what is the impulse when there is a force of 30 N for a time of 4 seconds? b. What is the force when there is an impulse of 18 N.

How does the transfer of thermal energy occur?

Which conducting electricity has the most harmful effects?

Which is the farthest known planet from the sun? a. Jupiter b. Saturn c. Uranus d. Neptune

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent

A bowling ball is pushed with a force of 22.0N and accerlates at 5.5 m/s square. What is the mass of the bowling ball A - 4.0 kg B-0.25 kg C-25 kg D-4.00 kg