Question
The power output of an engine is 3kW. How much work does the engine do in 20s?
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Name the characteristic which helps us to distinguish between a man's voice and woman's voice without seeing them.
Demonstrate the formation of convective currents.
A person of mass 50kg climbs a tower of height 72 metres. Calculate the work done. (8 = 9.8ms-2)
Represent graphically by two separate diagrams:
Two sound waves having the same amplitude but different frequencies?
Name the two acids that are present in acid rain.