Suppose that a radio station broadcasts simultaneously from two transmitting antennas at two different locations. compared with only one transmitting antenna, the reception with two transmitting antennas (a) is always better (b) is always worse (c) can be either better or worse, depending on the distance traveled by each wave.

A

Explanation:

Using 2 antennas always makes the reception better

radio waves lose their intensity as they travel outward from their source ( a transmitter ). So if you're using one antenna and you increase the distance the intensity will still be less compared to two antennas when you increase the distance

the device is called “ rocket engine”

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.