An eagle, with a wingspread of 2.0 m, flies toward the north at 8.0 m/s in a region where the vertical component of the earth's magnetic field is 0.20 × 10-4 T
What emf would be developed between the eagle's wing tips? (It has been speculated that this phenomenon could play a role in the navigation of birds, but the effect is too small, in all likelihood.)
0.32 mV
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As a blackbody becomes hotter it will radiate ____
a. less energy, at a longer wavelength of maximum intensity b. less energy, at a shorter wavelength of maximum intensity c. more energy, at a longer wavelength of maximum intensity d. more energy, at a shorter wavelength of maximum intensity e. more energy, at a constant wavelength of maximum intensity
The formation of a galactic central bulge is believed to ____
a. be a slow steady process lasting billions of years b. start after the formation of spiral arms c. be a violent process which adds mass to the central black hole d. begin when the central black hole has reached mature size e. continue throughout the galaxy's life body
Contrast the Oort Cloud and the Kuiper Belt
What will be an ideal response?
From a molecular point of view, explain why evaporation is a cooling process. What cools?
What will be an ideal response?