
Heat Engines, Energy, & Work
Authored by ZACHARY CIHAL
Physics
9th - 12th Grade
Used 1+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A heat engine absorbs 90 J of heat from its surroundings and uses 48 J to do work. How much energy does the engine release back to it surroundings?
42 J
138 J
48 J
90 J
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a gasoline engine takes in 550 J of heat energy and does 330 J of work, what is the engine's efficiency?
0.60
0.55
0.19
0.40
3.
DRAG AND DROP QUESTION
1 min • 1 pt
a measure of the useful energy taken out of a process relative to the total energy that is put into the process
(a)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A heat engine cannot transfer all the energy it absorbs as heat into work.
True
False
5.
OPEN ENDED QUESTION
3 mins • 1 pt
State the 1st Law of Thermodynamics in your own words:
Evaluate responses using AI:
OFF
6.
OPEN ENDED QUESTION
3 mins • 1 pt
State the 2nd Law of Thermodynamics in your own words:
Evaluate responses using AI:
OFF
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A steam engine absorbs 690 J and releases 372 J in each cycle. What is the engine's efficiency?
0.46
0.69
0.64
0.54
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