The information on a one-gallon paint can is that the coverage, when properly applied, is 440 ft2 . One gallon is 231 in3 . What is the average thickness of the paint in such an application?
a. 3.6E–3 in
b. 5.3E–1 in
c. 4.4E–2 in
d. 1.3E–2 in
e. 1.6E–1 in
a
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What do we mean when we say that a magnetic field has polarity?
A. A planetary magnetic field is aligned with the geographic poles of the planet. B. A planetary magnetic field is strongest at the poles of the planet. C. A magnetic field is able to flip its poles over a long period of time. D. A magnetic field has a north and south "poles" or directions. E. None of these choices are correct.
Relative to the age of the universe, how old is our solar system?
A) It is about 1% as old as the universe. B) It is about one-third the age of the universe. C) It is nearly the same age as the universe. D) It is between about 5% and 10% as old as the universe.
If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating
Indicate whether the statement is true or false
The diagram exaggerates the sizes of Earth and the Sun relative to the orbit. If Earth were correctly scaled relative to the orbit in the figure, how big would it be?
A) about half the size shown B) about 2 millimeters across C) about 0.1 millimeter across D) microscopic