When thermal energy of a system increases, the particles move .The motion of the particles can move parts of the system. When something causes an object to ___ it has done work on it.

a. slower;move
b. faster;move
c. faster;heat up
d. slower; heat up

am i too late?

explanation:

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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