An audio amplifier, represented by the AC source and the resistor, R, delivers alternating voltages at audio frequencies to the speaker. If the source puts out an alternating voltage of 15.0 V, the resistance, R, is 8.20 Ω and the speaker is equivalent to a resistance of 10.4 Ω. Calculate the: a) rms current of the circuit.

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

What quantity do units represent in value