A swift karate chop with one's bare hand breaks a cement block. The amount of force by the block on one's hand is
A. zero.
B. the same as the force applied to the block.
C. less than the force applied to the cement block.
D. more than the force applied to the block.
Answer: B
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Which of the following is densest: a kilogram of feathers, a kilogram of bricks, or a kilogram of water?
A) A kilogram of feathers B) A kilogram of water C) A kilogram of bricks D) All three have the same density because they all have the same mass.
In the northern hemisphere objects are deflected to the
A. right, irrespective of which way it is moving. B. right, but based on objects moving to the north or south only. C. left, but based on objects moving to the north or south only. D. left, irrespective of which way it is moving.
Individual efforts to reduce the volume of the waste stream
A. Have some effects, but we need to target industries to reduce their waste stream instead B. Have enormous cumulative effects C. Are fairly useful because it demonstrates to corporations that we care D. Have little effect, but make people feel better E. Matter very little
Jet streaks are thought to have little to do with the development of severe thunderstorms
a. true b. false