The person holding the bow and arrow has now let go. the arrow shoots forward toward its target. what type of energy is being described? a. kinetic b. potential c. chemical or d. heat

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.