A tungsten wire has a radius of 0.070 mm. When 108 V is applied across the ends of the hot wire, a current of 3.80 A is produced. How long is the wire? (The resistivity of tungsten is Ωm)

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

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.