Question

In the 19th century James Joule, an English scientist, was the first to recognize the mechanical equivalent of heat as a specific form of the general rule of the conversion of one form of energy to another.

Which fact can be explained with the help of this law?
A) burning a fuel releases heat
B) heating a block of ice causes it to melt
C) a piece of iron glows red hot in a furnace
D) wood rubbed against a rough surface feels hot

Answer 1

Answer:

D) wood rubbed against a rough surface feels hot

Explanation:

The heat is transferred from one form of energy (friction of the wood being rubbed against the surface) to another (heat energy).

Answer 2

Answer:

D

Explanation:

It is the only one that makes sense ( friction is being made )