Which of the following is a part of a wave?

a. crest

c. trough

b. drift

d. both a and c

Which area receives about the same amount of precipitation as the Arctic and Antarctic tundra? A. The Great Plains of the America Midwest B. The African savanna C. The Amazon rain forest D. The Gobi Desert

Suppose the displacement x of another object is related to time t according to x = A sin (2nft), where A and f are constants. What are the dimensions of A? a. L x T b. L / T c. L d. T / L e. T

A stationary neutron star is also called a pulsar? True False

If you add mass to a car on a ramp the acceleration of the car does not increase proportional to the increase in mass. Why not?

How many board feet of lumber are needed assuming 200 lin. Ft. of 2""x 6"" lumber a. 12 b. 16.67 c. 120 d. 200

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

How much power is reqired to lift a 10-n box 2 meters

Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. A 200 kg dolphin leaps straight up to a height of 7.8 m.

An example of renewable energy resource is ... A - uranium B - Wind C - natural gas