Question

What was the important new result shown by Joule's experiment involving paddles stirring known quantities of water?

A. it takes work to paddle the water
B. liquids have a definite volume but no definite shape
C. mechanical energy can be used to stir liquids
D. the energy transferred by work is equivalent to the energy transferred by heat

Answer 1

It is the last option, since thanks to Joule's experimentation, we have established the subsequent equivalence:
\[{\text{work = J}} \times {\text{ amount of heat}}\]
where J= 4.18 Joules/cal

Answer 2

ohh okie!! thank you:)

Answer 3

:)