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IMSO 2017 Science International - Theory I Question 30

IMSO Science · IMSO 2017 Science International - Theory I

Question 30

Three identical glasses of water at 60°C are placed side by side in contact with each other as shown below. Given that glass X contains 0.5 kg of water, glass Y contains 0.3 kg of water and glass Z contains 0.1 kg of water, which of the following is true about the heat flow by conduction between the glasses?

Question illustration
  1. There is net heat flow in all directions.
  2. There is net heat flow from glass X to glass Y.
  3. There is no net heat flow among these three glasses.
  4. There is net heat flow from glass Y to glass X and from glass Y to glass Z.