Answer:
The claim is valid.
Explanation:
Let assume that heat pump is reversible. The coefficient of performance for the heat pump is:



The claim is valid as real heat pumps have lower coefficients of performance.
Overcurrent protective devices, or OCPDs
Answer:
Outside temperature =88.03°C
Explanation:
Conductivity of air-soil from standard table
K=0.60 W/m-k
To find temperature we need to balance energy
Heat generation=Heat dissipation
Now find the value
We know that for sphere

Given that q=500 W
so

By solving that equation we get
=88.03°C
So outside temperature =88.03°C
In poor weather, you should <u>double</u> your following distance.
Answer: um wuh anyways thxs for the points!
Explanation: ....:/