The current in a coil with a self-inductance of 1 mh is 2.8 a at t = 0, when the coil is shorted through a resistor. the total resistance of the coil plus the resistor is 11.0 capital omega. (a) find the current in the circuit after 0.5 ms.

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.