Water level in the reservoirs is measured in_____.

Water released from dams is measured in __________.

Water levels in rivers increase greatly during____.

Water equivalent of a body is measured in

50cc of oxygen is collected in an inverted gas jar over water.The atmospheric pressure is 99.4 kPa and the room tempareture is 27^(@)C. The water level in the jar is same as the level outside . The saturation vapour pressure at 27^(@)C is 3.4kPa. Calculate the number of moles of oxgen collected in the jar.

An engine is supposed to operate between two reservoirs at temperature 727°C and 227°C. The maximum possible efficiency of such an engine is

In the dams water is stored in the high reservoirs and then made to fall down. This falling water then rotates the turbines to generate electricity. In this energy conversion process can you tell the initial and final energies respectively?