An electric current that is varied to represent information is a (n)

a. electronic signal

b. digital signal

c. integrated circuit

d. electromagnetic wave

Arrows to order the list and then click "submit." The same person performs all the activities listed below.

Complete the passage. Sound waves and some earthquake waves are ___ waves. Ocean, light, and other earthquake waves are ___ waves.

What kind of energy is stored in compounds and released in reactions

Rills, gullies, streams, rivers and tributaries are all caused by

Which are causes of desertification? global climate change farming deforestation overgrazing erosion

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.

Vf=vi+at solve for t

A solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 * 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and the insulating coat on the wire is negligibly thin.

How would you describe the two projectors used to screen a three-dimensional movie? A. Both projectors have vertical polarizers. B. One projector has a vertical polarizer and the other has a horizontal polarizer. C.

A roller coaster has a mass of 500 kg. It drops from rest at the top of a hill that's 57 m tall. How fast is it going when it reaches the bottom? Acceleration due to gravity is g = 9.8 m/s2.