an unknown metal with a mass of 135.0 grams was heated in boiling water and then allowed to come to thermal equilibrium with 80.0 grams water that was 22.0 degrees celsius before the metal was added. the ending temperature of the water was found to be 41.0 degrees celsius. what was the temperature change of the metal and water?

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

Aballet student who learns with the of his instructor is demonstrating learning.