Calculate the gravitational potential energy of the following:
a. a 1,200 kg car at the top of a hill that is 42 m high
b. a 65 kg climber on top of Mount Everest (8,800 m high)
20.53 ka bird flying at an altitude of 550 m

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.