A 626g sample of water at 90 degrees is mixed with 441g of, Ask an Expert

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Q. A 626g sample of water at 90 degrees is mixed with 441g of water at 30 degrees. What is the final temp of the mixture? Presume not heat is lost to the surroundings.

Q. An 54 N box of clothes is pulled 7.40 m up a 30° ramp by a force of 99N that points along the ramp. If the coefficient of kinetic friction between box and ramp is 0.22, compute the change in the box's kinetic energy.

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