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.

The electromagnetic waves having the highest speed in free space are

Which of the following nuclei would be most stable? A nucleus that contains 10 protons and 10 neutrons A nucleus that contains 7 protons and 7 neutrons A nucleus that contains 100 protons and 200 neutrons A nucleus that contains 84 protons and 84

The two upper chambers of the human heart are known as: a. atriums c. auricles b. ventricles d. blood vessels

What do the tubes of the air capacitor represent in an electrical capacitor? The parallel conducting plates The source of electrical current The insulation between plates The charged plate of a magnetic field

The wavelength of a light wave will affect the light's A) frequency and color B) frequency and amplitude C) amplitude and color D) color :D

What is static electricity and how does it differ from current electricity

A protostar forms once the nebular cloud condenses and the core begins

Current is the flow of what?

Why might an electromagnet be used to pick up old cars in junk yards? a. Electromagnets are inexpensive and easily create revenue. b. Electromagnets are powerful and can be turned on and off easily. c.

The average radius of Mars is 3,397 km. If Mars completes one rotation in 24.6 hours, what is the tangential speed of objects on the planet's surface? Round your answer to the nearest whole number.