Physics, 12.11.2019 20:31 OojohnnyoO116
While keeping your food cold, your refrigerator transfers energy from the inside to the surroundings. thus thermal energy goes from a colder object to a warmer one. what can you say about this? a. it is a violation of the second law of thermodynamics. b. it is not a violation of the second law of thermodynamics because refrigerators can have efficiency of 100%. c. it is not a violation of the second law of thermodynamics because the second law doesn't apply to refrigerators. d. the second law of thermodynamics applies in this situation, but it is not violated because the energy did not spontaneously go from cold to hot.
Answers: 1
Physics, 22.06.2019 09:00
When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical
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Physics, 22.06.2019 10:50
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 14:30
What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?
Answers: 1
While keeping your food cold, your refrigerator transfers energy from the inside to the surroundings...
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