a$)$ The closest distance between Earth and Mars is about $54\mathrm{.}510^6$ km$.$ Determine the

decibel path loss between the two planets at $($a$)1$ GHz and $($b$)10$ GHz$.$

b$)$ Assume that a radio signal is being sent from Earth to Mars based on the distance above. If

there was an immediate response when it arrived, how long would it be from the time that

you sent the message until you received an answer?