Question

in which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situa tion is work being done on the system in order for energy to be trans- ferred from the system as heat? a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A red-hot iron bar is set aside to cool.

Answer 1

The answer is option A, i think but i am not sure