How many valence electrons are there in group viia elements

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

When does your body conduct current more readily?

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.