a yoyo in someones hand is an example of potential energy
Answer:
Length (l) = 6 m
height (h) = 3 m
Load(L) = 500 N
Effort (E) = ?
we know the principal that
E * l = L * h
6 E = 500 * 3
6E = 1500
E = 250
therefore 250 N work is done on the barrel.
I have no clue how to answer it
Answer:
B
Explanation:
The reason why is simple all stars hold key... compounds necessary to life. when a star supernovas it blast all of those out like a shotgun.