Consider the power dissipated in a series r–l–c circuit with r=280ω, l=100mh, c=0.800μf, v=50v, and ω=10500rad/s. the current and the voltages in this circuit are not in phase with each other. using the values given, the phase angle ϕ was found to be 73 ∘, and the current amplitude i was found to be 5.1×10−2 a . calculate the power factor and the average power to the entire circuit and to each circuit element.

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0

Which statement correctly describes the interaction between magnetic poles? north and south poles attract each other. north and south poles repel each other. two north poles will attract each other. two south poles will attract each other.