Two small balls, a and b, attract each other gravitationally with a force of magnitude
f. if...
Physics, 11.10.2019 00:40 tatyananannanana
Two small balls, a and b, attract each other gravitationally with a force of magnitude
f. if we now double both masses and the separation of the balls, what will now be the magnitude of the attractive force on each one?
Answers: 2
Physics, 21.06.2019 23:00
Will you chech and finish these for me, because i am stumped with them.
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Physics, 21.06.2019 23:10
A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m
Answers: 1
Physics, 22.06.2019 15:40
If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
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Physics, 22.06.2019 19:30
A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
Answers: 1
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