Part a
telephone signals are often transmitted over long distances by microwaves. what is the frequency of microwave radiation with a wavelength of 3.0 cm?
express your answer in ghz and using two significant figures.
f =
part b
microwave signals are beamed between two mountaintops 55 km apart. how long does it take a signal to travel from one mountaintop to the other?
express your answer in ms and using two significant figures.
t =

Explanation:

Part A,

Wavelength of microwave radiation,

We know that the microwaves is a type of electromagnetic wave. It is moving with speed of light. Let f is the frequency of the microwave radiation.

The frequency of microwave radiation is 10 GHz.

Part B,

Microwave signals are beamed between two mountaintops 55 km apart, d = 55000 m

Let t is the time taken by the signal to travel from one mountaintop to the other. It is given by :

Hence, this is the required solution.

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

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.