Answer:
If she is walking 30 feet every 10 seconds, that means she is walking 180 feet per minute. Multiply that by the 60 minutes in an hour, means she walks (180x60)= 10,800 feet an hour.
She walks 3 feet a second.
She walks 180 feet a minute.
She walks 10,800 feet an hour.
Explanation:
To solve this problem it is necessary to apply the concepts related to the coefficient of performance. The coefficient of performance allows us to relate both the Heat and the Work done on a heat pump or cooling system to know the percentage of losses or input energy.
Mathematically your relationship can be expressed as
Where,
Q = Heat
W = Work
Our values are given as
COP =4.2
Cooling
Replacing at our equation we have,
Therefore the work is 60J.
Other countries have reacted the same way as the United States has.