What horizontal applied force will accelerate a 400-kg crate at 1 m/s2 across a factory floor against a friction force half its weight?
A) 600 N
B) 1600 N
C) 2000 N
D) 2400 N
E) none of the above
D
Environmental & Atmospheric Sciences
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When he does work on a cart in half the time, his power output is
A. twice. B. half. C. the same. D. none of the above
Environmental & Atmospheric Sciences
Professional baseball regions of the United States are most strongly linked to
A) cities. B) states. C) ethnic groups. D) economic classes. E) political groups.
Environmental & Atmospheric Sciences
Mass wasting occurs when the ____________________ of a slope is exceeded by the force of gravity
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
Life on the earth depends on the interaction of gravity, the cycling of matter, and the ____.
A. recycling of energy B. one-way flow of high-quality energy C. one-way flow of matter D. destruction of energy E. consumption of matter
Environmental & Atmospheric Sciences