Answer:

Explanation:
given data:



Q = - 2.1 Btu


![V_2 = V_1 [\frac{P_1}{P_2}]^{1.1}](https://tex.z-dn.net/?f=V_2%20%3D%20V_1%20%5B%5Cfrac%7BP_1%7D%7BP_2%7D%5D%5E%7B1.1%7D)
![= 1 [\frac{23040}{56160}]^{\frac{1}{1.1}](https://tex.z-dn.net/?f=%3D%20%201%20%5B%5Cfrac%7B23040%7D%7B56160%7D%5D%5E%7B%5Cfrac%7B1%7D%7B1.1%7D)

work done during polytropic process


= -18442.1 ft lbf
we know 1 Btu = 778.169 ft. lbf, therefore
w = -23.6993 Btu



The term pressure refers to the force per area created by the weight
of anything whose weight is distributed over an area, such as the
Earth's atmosphere, a lake, a gas inside a sealed jar, or a pointy
high heel.
333.15 Kelvins are equal to 60 degrees celsius
The statement that is a quantitative observation is that bird has four different colors on it (option B).
<h3>What is a quantitative research?</h3>
A quantitative research is a systematic scientific investigation of quantitative properties and phenomena and their relationships, using statistical methods.
A quantitative observation has to do with numbers or numeric analysis.
This suggests that the statement that is a quantitative observation is that bird has four different colors on it.
Learn more about quantitative observations at: brainly.com/question/1434538
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