Which of the following is using primarily kinetic energy
a two friends drinking a soda on a park bench
b a bucket of paint sitting on a ladder
c a bowling ball rolling down a bowling alley
d a furnace warming up a house on a cold day

C) a bowling ball rolling down a bowling alley

Explanation:

Potential energy is the energy possessed by an object by virtue of its position.

Kinetic energy is the energy possessed by an object by virtue of its motion.

a) two friends drinking a soda on a park bench possess potential energy as they are not in motion.

b)  a bucket of paint sitting on a ladder  possess potential energy as they are not in motion.

c) a bowling ball rolling down a bowling alley possess kinetic energy as it is in motion.

d) a furnace warming up a house on a cold day possess potential energy as it is not in motion.

Thus a bowling ball rolling down a bowling alley is  primarily using kinetic energy.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.