Four people are spaced at different distances from where a dog is barking. The barking will sound the loudest to the person who is standing
04 m
away
15 m away
O 1 m away
o 12 m away

Need help ASAP!!

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.