Physics, 07.03.2020 04:54 jjjxxcsenone1034
Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Use these two facts and the inverse square law for light to answer the questions.
a) Determine the apparent brightness that we would measure for the Sun if we were located half Earth's distance from the Sun.
b) Determine the apparent brightness that we would measure for the Sun if we were located twice Earth's distance from the Sun.
c) Determine the apparent brightness that we would measure for the Sun if we were located seven times Earth's distance from the Sun.
Answers: 1
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Ahot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. when the balloon is 7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below. how much time elapses before the sandbag hits the ground?
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Physics, 21.06.2019 23:30
What are chlorofluorocarbons and what impact do they have on the atmosphere?
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Physics, 22.06.2019 07:30
Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20
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Physics, 22.06.2019 12:30
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Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sk...
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