How much heat in joules is needed to raise the temperature of 10 grams of water from 25 c to 50 c?

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 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

The softest and hardest minerals are: softest hardest