If a cup of coffee is at 90°c and a person with a body temperature of 36°c touches it, how will heat flow between them?

a. from the hand to the cup
b. from the cup to the hand
c. from the cup to the surrounding air
d. from the hand to surrounding air

From the cup to the hand.

Explanation:

Note that heat flows from the region of higher temperature to a region of lower temperature.

If a cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, therefore the heat flow will be from the coffee(higher temperature) to the body at 36°C. This is due to the temperature gradient i.e difference in temperature of the two bodies.

The heat from the coffee will be transmitted to the hand.

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