Advertisements
Advertisements
Question
Why is water used as a coolant in radiators of a car?
Advertisements
Solution
When water passes through a pipe surrounded by a hot part of the engine, heat energy is removed from those parts. Because water has high specific heat capacity, water in pipes may extract more heat from the environment without significantly raising its temperature. As a result, the car's radiator and generator are both filled with water.
APPEARS IN
RELATED QUESTIONS
What do you understand by the following statements:
The specific heat capacity of lead is 130 Jkg-1K-1.
What property of water makes it an effective coolant?
The specific heat capacity of water is :
An electric heater of power 600 W raises the temperature of 4.0 kg of a liquid from 10.0℃ to 15.0℃ in100 s. Calculate:
- the heat capacity of 4.0 kg of liquid,
- the specific heat capacity of the liquid.
A solid of mass 80 g at 80°C is dropped in 400 g water at 10°C. If final temp. is 30°C, find the sp. heat cap. of the solid.
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
Numerical Problem.
How much heat energy is required to change 2 kg of ice at 0°C into water at 20°C? (Specific latent heat of fusion of water = 3,34,000 J/kg, Specific heat capacity of water = 4200 JKg–1K–1).
A piece of lead weighing 500 g gives out 1200 calories of heat when it is cooled from 100° C to 20° C. Find its specific heat.
Find the odd one out:
