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Questions (6)
Find the maximum possible coefficient of performance for a heat pump used to heat a house in a northerly climate in winter. The
1 answer
1,223 views
At what cold-reservoir temperature (in degree C) would a Carnot engine with a hot-reservoir temperature of 350degree C have an
1 answer
599 views
The label on a candy bar says 470 Calories.
Assuming a typical efficiency for energy use by the body, if a 74 person were to use
1 answer
968 views
In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm,
2 answers
887 views
A marble slides without friction in a vertical plane around the inside of a smooth, 21 cm-diameter horizontal pipe. The marble's
2 answers
1,278 views
In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm,
3 answers
6,499 views
Answers (1)
Assuming a typical efficiency for energy use by the body, if a 74 kg person were to use the energy in this candy bar to climb stairs, how high could she go?
