Two masses m1 and m2 move in a plane and interact by a potential energy u(r) = 1/2kr^2. write down their lagrangian in terms of the cm and relative positions r and r, and find the equations of motion for the coordinates x, y and x, y. describe the motion and find the frequency of the relative motion.

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?

Which statement correctly describes the relationship between frequency and wavelength?

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work