A star such as the Sun starts out as a protostar with a diameter a hundred times larger than its diameter during its main-sequen
1 answer:
The protostar's surface area was 1.1 times greater.
<h3>Surface area of the star</h3>
The surface of the star can be assumed be circular and the surface area can determined as follows;
- initial diameter = 100d
- final diameter = 95d
Area = πr²
Surface area = 1.1 times greater
Thus, the protostar's surface area was 1.1 times greater.
Learn more about protostars here: brainly.com/question/891408
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Answer:
The specific heat capacity is q_{L}=126.12kJ/kg
The efficiency of the temperature is n_{TH}=0.67
Explanation:
The p-v diagram illustration is in the attachment
T_{H} means high temperature
T_{L} means low temperature
The energy equation :
= R*
in(
/
)
The specific heat capacity:
=q_{h}*(T_{L}/T_{H})
q_{L}=378.36 * (400/1200)
q_{L}=378.36 * 0.333
q_{L}=126.12kJ/kg
The efficiency of the temperature will be:
=1 - (
/
)
n_{TH}=1-(400/1200)
n_{TH}=1-0.333
n_{TH}=0.67
