Physics, 14.11.2019 01:31 Patricia2121
One end of an insulated metal rod is maintained at 100 ∘c and the other end is maintained at 0.00 ∘c by an ice–water mixture. the rod has a length of 70.0 cm and a cross-sectional area of 1.10 cm2 . the heat conducted by the rod melts a mass of 8.70 g of ice in a time of 15.0 min .
find the thermal conductivity k of the metal?
k= w/(m. k)
Answers: 3
Physics, 22.06.2019 12:30
An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.
Answers: 1
Physics, 22.06.2019 14:30
The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
One end of an insulated metal rod is maintained at 100 ∘c and the other end is maintained at 0.00 ∘c...
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