Find the power of a sound wave if it has an intensity of 2W/m2 at a distance of 10m.

b.transmitters send radio waves, and receivers capture radio waves.

object 2 because all the other ones are wrong

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.