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Substance X is placed in a container with substance Y. Both substances are fluids. Substance X initially sinks to the bottom of the container. After five minutes of being heated on a hot plate, substance X becomes less dense than substance Y.

What will most likely happen next?

Substance X will rise due to convection.
Substance Y will rise due to convection.
Substance X will rise due to radiation.
Substance Y will rise due to radiation.

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Answered by GPT-5 mini AI
Substance X will rise due to convection.

Heating reduced X's density so it becomes less dense than Y; the resulting buoyant force drives fluid motion (convection). Radiation does not cause bulk fluid motion.