Question
What do you mean by thermal equilibrium?
When two bodies at different temperatures are kept in contact with each other, then heat energy flows from the hot body to the colder one.
It means that the hot body will lose heat and the cold body will gain heat till they reach a common temperature. This state is called thermal equilibrium.
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Find the mass of an object weighing 98 N
A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)
