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Question
A friend argues that if mass were really conserved he would never need to refill his gas tank. What explanation do you offer your friend?A) The atoms (mass) of gasoline are converted into energy by the engine according to E=m
.B) The Law of Conservation of Mass does not apply to reactions involving combustion or explosion of matter.
C) The atoms (mass) of gasoline are converted into exhaust fumes.
D) The oil companies make gasoline in a way that it gets used up so that we are always required to replenish it.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.
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When the temperature of a fixed volume of air initially at 0 C is lowered by 1 degree, its pressure
A) decreases by 1/273.
B) decreases by 100/273.
C) increases by 1/273.
D) increases by 100/273.
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Which of these is the smallest?
A) 1 Celsius degree
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Distinguish between the concepts of thermal energy, temperature, and heat.
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A) surface of bodies of water.
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B) warmed.
C) both of these
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If water at 0C slightly increases in temperature, the water
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If water at 20C slightly increases in temperature, the water
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A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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Q:
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A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
D) moves toward destruction.
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
C) Third law
D) all of the above
Q:
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A) First law
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Q:
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
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Q:
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A) less the gravitational force between them.
B) more the gravitational force between them.
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B) half as much.
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B) increase.
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Q:
Newton discovered
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C) neither of these
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B) rise and fall back to Earth's surface.
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A) nearest the Earth.
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C) can't say
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C) planet nearest the Sun.
D) planet farthest from the Sun.
E) none of the above