PLEASE HELP! Explain how energy travels outward from the core and is emitted from the Sun. Include what happens in each layer of
2 answers:
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Answer:
The minimum work per unit heat transfer will be 0.15.
Explanation:
We know the for a heat pump the coefficient of performance () is given by
where, is the magnitude of heat transfer between cyclic device and high-temperature medium at temperature
and
is the required input and is given by
,
being magnitude of heat transfer between cyclic device and low-temperature
. Therefore, from above equation we can write,
Given, and
. So, the minimum work per unit heat transfer is given by
Answer:
Explanation:
We are given that
Mass,
Radius,r=0.8 m
Height,h=2.9 m
We have to find the angular acceleration of the cylinder.
According to question
Where
Substitute the value
Where
Angular acceleration,