Weightlifers a and b each lift the same barrel from the floor to a certain height. weightlifter a accomplishes this feat in time t = 2.0 s, while weightlifter b does so in 1.4 s. let p be the the power generated by weightlifter a. what power was generated by weightlifter b?

1.4p

0.70p

p

2.8p

Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

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.