Two 8.0 N forces act at each end of a a beam of length 0.60 m. The forces are parallel and act in opposite directions. The angle between the forces and the beam is 60°. What is the torque of

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

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.

Does heating a metal wire increase or decrease its electrical resistance? why?