Answer: Energy from the core travels by radiation through the radiative
zone, then by convection through the convection zone.
Explanation:
A)Ep'=mgh=mgl(1-cosa).At the bottom of the swing Ep=0(reference level),so the potential energy as the child is just released is bigger than the potential energy at the bottom of the swing.;B)The speed of the child at the bottom of the swing-->v=√(2gh)=√[2gl(1-cosa)];C)I don't think that the tension does any work.
Answer:
distance
Explanation:
it is the distance traveled by light in one year
