Abody initially moving at 0.500c with respect to a stationary observer disintegrates into two fragments that move in opposite directions relative to the centre of mass along the same line of motion as the original body. after disintegration, one fragment has a velocity of 0.600c in the backward direction in the centre of mass frame and the other has a velocity of 0.500c in the forward direction. what velocities will the observer measure for the two fragments?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc