40kg of water at 30 c is mixed with 40 kg of water at 47 c
4.0kg of water at 30 C is mixed with 4.0 kg of water at 47 C in a well-insulated container. Estimate the net change in entropy of the system.
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suppose a heat engine pulls 337times104 j of work from the hot reservoir and 752times103 j of that energy is used to
suppose a heat engine has an efficiency of 0201 and produces 109times104 j of work how much energy is pulled in from
a refrigerator moves energy from a cold reservoir the inside of the refrigerator to a hot reservoir the kitchen but
a 120 g insulated aluminum cup at 17 c is filled with 140 g of water at 40 c after a few minutes equilibrium is reached
40kg of water at 30 c is mixed with 40 kg of water at 47 c in a well-insulated container estimate the net change in
two containers contain the same gas at different temperatures and pressures as indicated in the figure the small
a hydrogen atom has a radius of about 005 nm a estimate the uncertainty in any component of the momentum of an electron
a cylinder of cross-sectional area 11 cm2 is fitted with a piston which is connected to a spring with a spring constant
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