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Question
A heavy rock and a light rock in free fall have the same acceleration because theA) force due to gravity is the same on each.
B) air resistance is always zero in free fall.
C) inertia of each is the same.
D) ratio of force to mass is the same.
E) none of the above
Answer
This answer is hidden. It contains 1 characters.
Related questions
Q:
Which requires more energy?
A) melting a gram of 0C ice
B) increasing the temperature of 1 gram of water from 0C to 100C
C) changing 1 gram of 100C water to 100C steam
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In walking barefoot on red-hot coals, providing that bits of coal do not stick to your feet, it would be safer if your feet are
A) wet.
B) dry.
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Q:
As a block of ice at 0C melts, the block absorbs energy
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B) and increases in temperature.
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When bringing water to a boil in the mountains, the time needed to reach the boiling point is
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Q:
A good cook knows that the temperature of violently boiling water is
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Q:
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Q:
Long ago a runaway greenhouse effect greatly transformed the planet
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Q:
When you leave your warm house for an hour or so on a cold day, to save energy you should turn the thermostat
A) down.
B) up.
C) off.
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Q:
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A) good absorber of radiation.
B) good emitter of radiation.
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Q:
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B) the outcome of radioactivity in Earth's interior.
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Q:
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A) warms.
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A) still warm.
B) cool.
C) neither of these
Q:
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A) conduction.
B) convection.
C) radiation.
D) all about equally
Q:
A water-filled paper cup held in a flame will not catch fire because
A) the inside of the paper is wet.
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Q:
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Q:
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Q:
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B) slows heat flow.
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Q:
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A) calories.
B) Calories.
C) joules.
D) any or all of the above for special cases
Q:
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A) contains.
B) transfers.
C) both of these
D) none of the above
Q:
Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.