A 1-N apple falls to the ground. The apple hits the ground with an impact force of about
A) 1 N.
B) 2 N.
C) 4 N.
D) 9.8 N.
E) not enough information given
E
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Which of the following statements is false?
a. It is more economical to have consumers separate trash before pickup than to use materials-recovery facilities. b. Glass, iron, and aluminum can be recovered from solid wastes. c. Source separation involves consumers separating trash into categories like glass, paper, and metal. d. Source separation is more costly and energy intensive. e. Materials-recovery facilities need a steady diet of garbage to be financially successful.
A boundary dispute in which there are no land boundaries concerns
A. North and South Korea B. Mongolia and China C. China and Russia D. The Spratley Islands
Would one expect to find more soluble materials in the soil of an arid region or the soil of a humid region? Why?
What will be an ideal response?
Mammoth Cave National Park in Kentucky was formed by the chemical weathering of ________
A) iron oxide B) sulphur dioxide C) calcium carbonate D) carbonic acid E) shale