1 100g of
bullet with S. H.C 0.03 cal/g°c is intially
at 20°c. It is
fired straightupward with a
Speed of 420m/s and on turning to
its starting point strikes a
cake of ice at
exactly 0°C. How much is melted?

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If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?