Compute the self-inductance of a toroid of square cross section if it is wound with 200 turns. the inner and the outer radii of the toroid are 20 cm and 25 cm, respectively. the relative permeability of the mag netic material is 500. if the current in the coil varies sinusoidally as 2 sin 314r a, determine the induced emf in the coil

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Which type of basaltic lava flow has a fairly smooth

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current