Is there any experimentally measurable difference between an air-filled primary and an iron-filled primary?
look up the in the crc handbook of chemistry and physics the magnetic susceptibility of aluminum and any of the iron compounds. what do you think this number represents?

Heat from the sun reaches earth to a. radiation b. convection c. conduction

What happens to light waves from a star as the star moves away from earth?

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod