What is the medium that sound waves travel through when a person speaks?
a. air
c. vocal cords
b. your tongue
d. it does not use a medium

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90

Which type of energy is transferred by convection currents?