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1) If the gas in a container absorbs 217 J of heat,
has 130 J of work done on it, then does 64 J
of work, what is the increase in the internal
energy of the gas?
Answer in units of J.
2) A system’s initial internal energy is 26 J.
Then heat is added to the system.
If the final internal energy is 37 J and the
system does 23 J of work, how much heat is
added to the system?
Answer in units of J.
3) A steamengine absorbs 5.92×10^5 J and expels
4.40 × 10^5 J in each cycle. Assume that all of the remaining energy is used to do work. What is the engine’s efficiency? How much work is done in each cycle? Answer in units of J.
4) [a]- A heat engine absorbs 793 J of energy per
cycle from a high-temperature source. The
engine does 361 J of work during each cycle,
expelling 432 J as heat.
What is the engine’s efficiency?
- An engine absorbs 1956 J from a hot reservoir
and expels 924 J to a cold reservoir in each
cycle.
What is the engine’s efficiency?
[c]- How much work is done in each cycle?
Answer in units of J.
has 130 J of work done on it, then does 64 J
of work, what is the increase in the internal
energy of the gas?
Answer in units of J.
2) A system’s initial internal energy is 26 J.
Then heat is added to the system.
If the final internal energy is 37 J and the
system does 23 J of work, how much heat is
added to the system?
Answer in units of J.
3) A steamengine absorbs 5.92×10^5 J and expels
4.40 × 10^5 J in each cycle. Assume that all of the remaining energy is used to do work. What is the engine’s efficiency? How much work is done in each cycle? Answer in units of J.
4) [a]- A heat engine absorbs 793 J of energy per
cycle from a high-temperature source. The
engine does 361 J of work during each cycle,
expelling 432 J as heat.
What is the engine’s efficiency?
- An engine absorbs 1956 J from a hot reservoir
and expels 924 J to a cold reservoir in each
cycle.
What is the engine’s efficiency?
[c]- How much work is done in each cycle?
Answer in units of J.