2. In each of the following cases, indicates whether there is a transfer or transformation of energy. a) a fire warms us. b) the dynamo of a bicycle is used to operate a radio apparatus. c) when they burn, the fireworks illuminate the sky. d) an element (a hot plate) of the stove warms a soup. e) the heating elements of a toaster turn red. f) A slice of bread becomes a roast.

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.