Balanced rock has a mass of about 36,000 kg. if the acceleration due to gravity is 9.8 meters per second squared, what is the force that the rock is exerting on its pedestal?

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

Determine the maximum r-value of the polar equation r =3+3 cos 0

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.