Approximately how many people in the U.S. die as result of emissions from coal-burning power plants (and other sources) each year?
A. 24,000
B. 12,000
C. 2000
D. 1000
Answer: A
Environmental & Atmospheric Sciences
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A heavy block is suspended at rest by a vertical rope. When you raise the block at a constant velocity, the rope tension
A. is zero. B. is greater than its weight. C. is less than its weight. D. equals its weight.
Environmental & Atmospheric Sciences
A diver who weighs 500 N steps off a diving board that is 10 m above the water. The diver hits the water with kinetic energy of
A) 10 J. B) 500 J. C) 510 J. D) 5000 J. E) more than 5000 J.
Environmental & Atmospheric Sciences
Oneway to study nature is to develop a(n) ____, which is an approximate physical or mathematical simulation of a system.
A. theory B. laboratory C. experimental group D. model E. law
Environmental & Atmospheric Sciences
Eluviation occurs due to ____
a. hygroscopic water b. gravitational water c. capillary water d. soil air e. humus
Environmental & Atmospheric Sciences