Atable of mass 10 kg is lifted so that the gravitational potential energy of the table increases by 1470 j. how high is the table lifted? acceleration due to gravity is g = 9.8 m/s2.

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

The maximum wavelength of light required to eject an electron from zinc is 270nm. calculate the threshold frequency of zinc.