Question

9.
What is the amount of heat in Joules given out by a piece
of iron of mass 200 gram when it cools from 70°C to 20°C
(specific heat of iron 470 j/kg °C).
(a) , 2700 J
(b) 3700 J
( 4700 J
(d) 5700 J

Answer 1

Answer:

The correct answer of thus question is option (a).

Answer 2

Explanation:

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