Aparticle of mass m is confined to a box with infinite walls at x = 0 and x = l. at time t = 0 the particle is in the state \(x) = sin (") + sin (27"). [5] (a) normalise the state y(x). (b) find the location inside the box where the particle is forbidden to exist. [5] (c) what is the shortest time after which the probability density p(x, t) = 4(x, t)/2 returns to its value at time t = 0?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

How is the gravitational force related to the distance between two objects?

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.