Since we know that the 55 mile per hour speed limit saves lives and gasoline, try to find reasons the speed limit on interstate highways has been set to 65 miles per hour and above in most states
What will be an ideal response?
Most people are in a hurry to get where they're going. They tend to underestimate
the risk of accident (see Chs. 20 and 26). The interstate roads are thought to be (and are,
relatively) safer. Politicians were under pressure to raise the speed limit and reduce the
number of traffic tickets.
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A metric ton (or tonne) is
a. the same as a British ton. b. not defined. c. a mass unit. d. a weight unit.
Leptons are built out of quarks
Indicate whether the statement is true or false
Which arrow best indicates the direction of the electric field at point P created by the charge distribution on the sphere’s surface?
A. A B. B C. C D. D E. Zero F. AA G. BB H. CC I. DD
Red-hot and blue-hot stars appear white to the eye because
A) the eye has difficulty seeing color at night. B) they are too dim to fire the cones. C) they are too dim to fire the rods. D) they are overwhelmed by the blackness of the nighttime sky. E) eye receptivity peaks in the yellow-green part of the spectrum.