Aball is released out a window that is 43 m above the ground. at what speed will it hit the ground? assume air resistance is negligible.

58 m/s

29 m/s

0.86 km/s

0 m/s

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

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.