A car can go from 0 - 60 mph in 12 S. A second car is capable of twice the acceleration of the first car. Assuming that it could maintain the same acceleration at higher speeds, how much time will this second car take to go from 0-120 MPH?
A. 12 S
B. 9.0 S
C. 6.0 S
D. 3.0 S
Ans: A. 12 S
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Suppose we had a device that allowed us to see Earth's interior. If we looked at a typical region of the mantle, what would we see happening?
A) not much—on human time scales, the mantle looks like solid rock B) hot molten rock rising upward throughout the mantle and cool, solid rock falling downward C) a rapid, up-and-down churning of the material in the mantle D) dense metals falling downward while low-density rock rises upward
Why is it so difficult to remove the lid from a vacuum-sealed jar?
A) The air pressure outside the jar pushes downward on the lid more strongly than the air pressure inside pushes upward on the lid. B) The higher pressure inside the jar pulls inward on the lid, holding it firmly to the jar. C) The vacuum inside the jar pulls inward on the lid, holding it firmly to the jar. D) The vacuum inside the jar pushes outward on the lid, holding it firmly to the jar. E) The air pressure inside the jar pushes upward on the lid more strongly than the air pressure outside pushes downward on the lid.
Which of the following types of chemical bond is not a primary bond type?
(a) Covalent (b) Fluctuating- electric dipole (c) Metallic (d) Ionic
How much energy is stored in a room 3.0 m by 4.0 m by 2.4 m due to the earth's magnetic field with a strength of 5.0 × 10-5 T? (?0 = 4? × 10-7 T • m/
A) A) 570 mJ. B) 29 mJ. C) 10 mJ. D) 100 mJ.