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Licemer1 [7]
3 years ago
7

Which feature of the sun is a section that is cooler than its surroundings?

Physics
2 answers:
Snowcat [4.5K]3 years ago
7 0
Sunspot. Sunspots are temporary cooler areas on the Sun's surface caused by changes in its magnetic field.
miss Akunina [59]3 years ago
7 0
It would be D. Sunspot
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Brainliest?

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3 years ago
The Assignment: A fixed quantity of an ideal gas (R 0.28 kJ/kgK; Cv-0.71kJ/kgK) is expanded from an initial condition of 35 bar,
Nikolay [14]

Answer:

Index of expansion: 4.93

Δu = -340.8 kJ/kg

q = 232.2 kJ/kg

Explanation:

The index of expansion is the relationship of pressures:

pi/pf

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p2 = p1*v1*T2/(T2*v2)

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