The wires leading to and from a 0.12 mm diameter lightbulb filament are 1.5 mm in diameter. The wire to the filament carries a current with a current density 4.5 X 105 A/m2. What are (a) current and the (b) current density in the filament

The slope of a velocity time graph over any interval of time gives the during that interval

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.

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.