Part A

A jet plane emits $\backslash (7\mathrm{.}0\backslash$times $10^\{5\}\backslash$mathrm$\{$~J$\}\backslash )$ of sound energy per second.

What is the sound level $26$ m away?

E

Part B

Air absorbs sound at a rate of about $\backslash (7\mathrm{.}0\backslash$mathrm$\{$~dB$\}/\backslash$mathrm$\{$km$\}\backslash )$; calculate what the sound level will be $5\mathrm{.}00$ km $.$

Express your answer using two significant figures.

Incorrect; Try Again; $4$ attempts remaining

Part C

Calculate what the sound level will be $7\mathrm{.}50$ km away from this jet plane, taking into account air absorption$.$

Express your answer using two significant figures.