The greater the hydraulic gradient the
A) slower the flow.
B) faster the flow.
C) greater the porosity.
D) less the permeability.
Answer: B
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Velocity Addition: A person in a rocket ship traveling past the earth at a speed of 0.500c fires a laser gun in the forward direction. With what speed does an observer on Earth measure for the light pulse?
Fill in the blank(s) with the appropriate word(s).
Somewhere between the Earth and the Moon is a point where the gravitational attraction of the Earth is canceled by the gravitational pull of the Moon. The mass of the Moon is 1/81 that of the Earth. How far from the center of the Earth is this point?
a. 8/9 the way to the Moon b. 9/10 the way to the Moon c. 3/4 the way to the Moon d. 80/81 the way to the Moon
A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is the change in the frequency (in Hz) heard by an observer in the moving car as he passes the police car? (The speed of sound in air is 343 m/s.)
a. 416 b. 208 c. 105 d. 52 e. 552
The gamma rays created in the Sun's core move freely through the ________ zone
Fill in the blank(s) with correct word