The force on an object is given by the equation f = ma. in this equation, f is the force, m is the mass, and a is the acceleration. what is the force on an object that has a mass of 10 kg and an acceleration of 2.5 m/s2? a. 12.5 n b. 25 n c. 0.25 n d. 4 n

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The two required components for a generator

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?