Sunlight passing through a pinhole in a piece of paper casts an image of the Sun, as shown. The image size depends on the distance from the pinhole to the floor. If the paper with the pinhole is held about 100 cm above the floor, the diameter of the solar image is about 1 cm. A 1-cm-diamieters coin will just fit over the image (making it easy to measure!). That means about 100 end-to-end coins would fit between the floor and the pinhole. What does this tell you about how many Suns would fit between Earth and the Sun?
Sunlight passing through a pinhole in a piece of paper casts an image of the Sun, as shown. The image size depends on the distance from the pinhole to the floor. If the paper with the pinhole is held about 100 cm above the floor, the diameter of the solar image is about 1 cm. A 1-cm-diamieters coin will just fit over the image (making it easy to measure!). That means about 100 end-to-end coins would fit between the floor and the pinhole. What does this tell you about how many Suns would fit between Earth and the Sun?
Sunlight passing through a pinhole in a piece of paper casts an image of the Sun, as shown. The image size depends on the distance from the pinhole to the floor. If the paper with the pinhole is held about 100 cm above the floor, the diameter of the solar image is about 1 cm. A 1-cm-diamieters coin will just fit over the image (making it easy to measure!). That means about 100 end-to-end coins would fit between the floor and the pinhole. What does this tell you about how many Suns would fit between Earth and the Sun?
An astronomer wants to design an infrared telescope with an angular resolution of 1.5 arcseconds at a wavelength (L, in our equation) of 20 micrometers. What would be the diameter (D) of the mirror they would need to make?
If you were to observe the sunset on the Moon, would you see the space around the sun as red, like you do on earth?
Yes, because the color of light is independent of where you are.
No, you would see it blue because of scattering of light.
It would depend on the time of the day when you look at the sky.
You would not because there is no atmosphere on the moon to scatter the light.
You would not because the moon absorbs all the colors of light.
You would see it black because the moon reflects all the colors.
Yes, you would see it red like on the earth because both the moon and the earth are spehrical.
Divers swimming at 7 meters below the surface found that the light level was 83% that of the surface. If light is governed by the Beer-Lambert equation I=I0a^x where I0 is the surface light, what is the extent of the photic zone (assessed as light being 1% that of surface light levels)?
Chapter 11 Solutions
Modified Mastering Physics with Pearson eText -- Standalone Access Card -- for Conceptual Physical Science (6th Edition)
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