an ac circuit with a total resistance of r has an rms current of i. the circuit wraps around an iron core transistor with 50 loops. the secondary coils, leading to a different circuit, wrap with n loops. the secondary circuit has a total resistance of 40 ω. what is the rms current in the secondary circuit (6 points)? assigned values for 15.0 ω r = , i = 5.0 amp, and n = 18

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)