Question

details
no additional details were added for this assignment.
when is thermal equilibrium achieved between two objects?

• when temperature is no longer transferred
• when one objects is hotter than the other
• when the particles in one object have more kinetic energy
• when both objects have the same temperature

Explanation:

Thermal equilibrium is a state where there is no net heat transfer between two objects. Heat transfer occurs due to a temperature difference. When two objects have the same temperature, the rate of heat transfer from one object to the other is equal to the rate of heat transfer in the reverse direction, resulting in no net heat transfer.

• The option "when temperature is no longer transferred" is incorrect terminology (heat, not temperature, is transferred).
• "When one object is hotter than the other" describes a situation where heat transfer is occurring, not equilibrium.
• "When the particles in one object have more kinetic energy" implies a temperature difference (since temperature is related to average kinetic energy of particles), so heat transfer would occur, not equilibrium.

So the correct option is the one stating both objects have the same temperature.

Answer:

D. when both objects have the same temperature