I need help with these Physics problems.?

Babygirl

New member
A waterfall is 98 m high. What is the temperature change in the water due to its drop over the falls? Assume no heat loss to the surroundings.

A 70.0 g mass of brass at 70.0 degrees Celsius is placed in 110 g of water at 5.0 degrees Celsius. The water is in a copper calorimeter that has a mass of 55 g. What is the final temperature of the mixture?

A brass ball of mass 1.5 kg is dropped from a height of 35 m. If 50 percent of the heat generated stays in the ball, what will the temperature rise of the ball be?
 
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