Consider two magnets, one with twice the strength of the other. If the strong magnet pulls the weaker one with 100-N of force, the amount of force the weak one exerts on the strong one is
A. more than 100 N.
B. exactly 100 N.
C. about 50 N.
D. not enough information
Answer: B
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The three stages of a developing hurricane (from the first stage to the third) are ____
A) tropical disturbance, tropical storm, and typhoon B) tropical depression, tropical disturbance, and tropical storm C) tropical disturbance, tropical depression, and tropical storm D) cyclone, typhoon, and tropical storm
Which of the following is not an example of a potential surface water resource?
A) artificial lakes B) aquifers C) glaciers D) rivers
Since 1990, the world has seen a rapid resurgence of tuberculosis (TB). Describe the factors that account for this recent spread.
What will be an ideal response?
The population represented by the age class histogram on the right will
A. Soon begin to decline B. Grow slowly in the future C. Grow substantially in the future D. Not grow much in the coming years E. Have a large population of old people soon