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Question
Suppose a miracle car has a 100% efficient engine and burns fuel having an energy content of 40 MJ/L. If all resistant forces on this car traveling at highway speeds is 1000 N, what is the overall limit in distance per liter driven on the highway?A) 30 km
B) 40 km
C) 50 km
D) more than 50 km
E) not enough information
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
D) all the same
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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.
C) either of these
D) none of the above
Q:
As a block of ice at 0C melts, the block absorbs energy
A) and decreases in temperature.
B) and increases in temperature.
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B) released.
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B) raise the freezing point of water.
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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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C) the same as at sea level.
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A good cook knows that the temperature of violently boiling water is
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B) the same as that of simmering water.
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Long ago a runaway greenhouse effect greatly transformed the planet
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A) conduction.
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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.
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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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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:
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A) the inside of the paper is wet.
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B) slows heat flow.
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B) Calories.
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D) any or all of the above for special cases
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A) contains.
B) transfers.
C) both of these
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Q:
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A) degrees.
B) joules.
C) calories.
D) both joules and calories.