Physics, 31.07.2021 01:40 mcaninch36
Suppose you find a star which has helium fusion in the core surrounded by a shell of hydrogen fusion. What is supporting the structure of the stellar core against the relentless force of gravity
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How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?
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If steel is more dense that lake water, why can a boat float
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Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 22.06.2019 14:30
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
Suppose you find a star which has helium fusion in the core surrounded by a shell of hydrogen fusion...
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