With no air resistance, a projectile launched at 50° has the same range as if it were fired at
A. 45°.
B. 60°.
C. 55°.
D. 40°.
Answer: D
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Elephants are more closely related to whales than they are to the mastodons
a. True b. False
An experiment ________
A) is an activity designed to test the validity of a hypothesis B) involves only collection of quantitative data C) is designed to generate new scientific hypothesis D) often involves manipulating as many variables as possible E) does not need to be repeated if well designed
The only substance near Earth's surface that is found naturally in the current atmosphere as a solid, liquid, and a gas is
a. carbon dioxide. b. water. c. molecular oxygen. d. ozone. e. carbon.
Variations in specific humidity vary primarily as a function of
A. latitude. B. distance from cities. C. path of mid-latitude cyclones. D. distance from oceans.