Which of the following is not produced by plate tectonics?
a. midocean rifts
b. rift valleys
c. the ring of fire
d. the Appalachian Mountains
e. Earth's magnetic field
E
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Vision Problems: A nearsighted man wears contact lenses of -3.00 diopters. With these lenses, his corrected near point is 25.0 cm. What is his uncorrected near point?
Fill in the blank(s) with the appropriate word(s).
Viewed from Pluto, the Sun would appear more than a thousand times fainter than on Earth
Indicate whether the statement is true or false
The Carboniferous Period began about
A) 475 million years ago B) 65 million years ago C) 360 million years ago D) 542 million years ago
To analyze single-slit diffraction, what new assumption not made in the Young double-slit experiment must be made?
1.Each portion of the slit acts as a source of light waves. 2.The light's wavelength is at the red end of the spectrum. 3.Interference effects can be ignored. 4.The distance between the slit and the screen is much greater than the wavelength of the light.