The electromagnetic radiation that causes tanning:
a. rarely passes through glass windows.
b. is absorbed by ozone.
c. can produce cancer.
d. is all of the above.
D
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Jupiter lies about 5 A.U. from the Sun, so at its distance:
A) the Sun's gravity is just as strong as it is here at Earth. B) the Sun's gravity must be five times stronger to hold massive Jupiter in orbit. C) the Sun's gravity is five times weaker there than at one A.U. distance. D) the Sun's gravity is 25 times weaker than its pull on the Earth. E) the Sun's gravity is so weak that ultimately Jupiter will escape the solar system.
Fluid Flow: An ideal incompressible fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider section?
A. 12 m/s B. 6.0 m/s C. 4.0 m/s D. 3.0 m/s
Compared to a glass of ice water with ice, a glass of plain ice-cold water without ice on a warm day will warm up
A) faster. B) slower. C) in the same amount of time.
The primary types of chemical bonding in ceramics are ionic and _________.
Fill in the blank(s) with the appropriate word(s).