A nut is rusted and jammed. We have two wrenches one of length 10cm and another of 20cm. Which wrench is preferred to unscrew the nut? Give reason also.​

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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.