Answer:
the mechanical equivalent of heat states that motion and heat are mutually interchangeable and that in every case
Explanation:
hey did u ever do the lab?? if so plz send it cuz im doing it now!!!
u dummy
Friction is useful in some cases like walking and cycling ..
but it is unwanted in machines as it create unwanted sounds and heat .,due to which we loss energy
mark me as brainliest ❤️
hypothesis