A hot object and a cold object are placed into thermal contact. Which of the fol

Question

A hot object and a cold object are placed into thermal contact. Which of the following describes what happens between them?'Mark all that apply. Heat flows from the hot object to the cold object Heat flows from the cold object to the hot Temperature flows from the hot object to the cold object. Temperature flows from the cold object to the hot object if the two objects are in contact for a long time, they will reach thermal equilibrium. How much energy is required to bring an empty 15 kg copper pot at 20 degree C to 100 degree C? 1.2 times 10^5 J 5.0 times 10^5 J 4.7 times 10^5 J 5.9 times 10^5 J

Explanation / Answer

21.)

E = mC(Tf-Ti)

E = 15*390*10^2*80

E = 7.7*10^5 J

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