If an AA alloy’s numerical designation is followed by the letter “F”, this indicates that the alloy is as _________.
Fill in the blank(s) with the appropriate word(s).
fabricated
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Which of these is the dominant mechanism for the removal of carbon dioxide from the atmosphere?
A) subduction B) photosynthesis in plants C) dissolving carbon dioxide in seawater D) formation of carbonate-rich rocks at the seafloor
Light is totally absorbed when sent through two polaroid filters if their transmission axes are __________
Fill in the blank(s) with correct word
The vernal equinox occurs above the same geographic point on Earth from year to year
a. True b. False Indicate whether the statement is true or false
Ninety-five percent of light incident on a mirror is reflected. How much light is reflected when three of these mirrors are arranged so light reflects from one after the other?
A) 81% B) 85% C) 86% D) 90% E) 95%