Question

Water is used to cool down automobile engines when they get hot. Why is water used as a coolant? A. Water is a good conductor. B. Water is a good insulator. C. Water has a low heat capacity. D. Water has a high heat capacity. E. Water is a good radiator of heat.

Answer 1

Answer:

D. Water has a high heat capacity.

Explanation:

As we know that when water is used for coolant then in that case the water will absorb heat from the automobile.

here we know that the formula of heat is given as

$Q = mC\Delta T$

now here we know that

mC = Heat capacity of water

now if heat absorbed will be more then in that case when the heat capacity is more.

so here correct answer for more heat absorbed so that coolant will remove more heat from the automobile will be

D. Water has a high heat capacity.

Answer 2

Water is usually used to cool down automobile engines when they get hot, yes. Therefore, that means water has a high heat capacity.

That makes the answer letter D you provided above.

D) Water has a high heat capacity.

Another example would be trying to put out a fire with a bucket of water. Usually, you can put out the fire debating on the size!