A mass of m = 1 kg on a frictionless surface is observed to accelerate at a = 10 m/s2 at an angle of 60o east of north as shown in the top down view picture below. F2= 5 N and is directed directly upward. Determine the magnitude of F1 if it acts directly to the right.

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.

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

Difference between series and parallel circuits