Answer:
The answer is B
Explanation:
Only things that are moving have kinetic energy, therefore B is the only correct answer
they're called stellar black holes and only very large stars can form them because they have enough mass to do so
The radius of the garden hose is
, so its cross-sectional area is
The amount of water (in
) that comes out from the hose in one second is given by the product between the speed of the water and the cross-sectional area of the hose:
The time needed to fill the pool is equal to the volume of the pool divided by the amount of water that comes out every second:
Scientist judge each others work based mostly on how creative it is.
Following the definition of the center of mass, "In physics, the center of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero."
(see explanation below)