Which of these actions would decrease heat transfer between two objects?
increasing the temperature of the warmer object
increasing the area of their contact
reducing the thermal energy of the cooler object
reducing the time of their contact
Answer: Reducing the time of contact between the two objects will decrease the heat transfer between them.
Explanation:
increasing the temperature of the warmer object will raise its own temperature and hence the heat transfer will increase.
increasing the area of contact will also increase the heat transfer because the rate of transfer will increase and the loss to surrounding will decrease.
reducing the thermal energy of the cooler object will decrease its own temperature and this will increase the heat transfer to reach the equilibrium temperature.
reducing the time of contact between the two objects will decrease the amount of heat transferred between the two objects according to the time that will be in contact.
