Jessica stretches her arms out to 0.6m from the center of her body while holding a 2 kg mass in each hand she then spins around on an ice rink at 1.1m/s.
if she pulls her arms in to .15 m, what is her linear speed if the angular momentum remains constant?

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.

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3

How can waves travel through ground?