Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a to
1 answer:
You might be interested in
Answer:252 miles
Explanation:
Given
During his way to mountain it took 7 hr to drive
and during his return trip it took 4 hr to return
Let x be the distance between home and mountain
average speed for return is 27 miles per hour faster than his former trip
let v be the speed on his way to mountain thus v+27 is his return speed
thus ----1
for return trip
-----2
divide 1 & 2
thus