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Answers by HongyanShen

Answers by HongyanShen
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A ball is dropped from the top of the building.it initially moves at 4.0 m/s after 0.5 seconds it moves at 3.8m/s what force is responsible for the slowing of the ball
answered Sep 5, 2018
6 votes
117k views
Which statement is an opinion? A. Many presidents have admired Abraham Lincoln. B. Abraham Lincoln was the sixteenth president of the United States. C. Abraham Lincoln was the best president the United
answered Aug 13, 2018
0 votes
127k views
A solution is made by dissolving 21.5 grams of glucose (C6H12O6) in 255 grams of water. What is the freezing point depression of the solvent if the freezing point constant is -1.86 °C/m?
answered Apr 28, 2018
6 votes
137k views
Which organic molecule has been made to form in water in the laboratory ?
answered Aug 10, 2017
6 votes
102k views
which function below represents exponential decay?ƒ(x) = 0.5(2)xƒ(x) = 4(0.25)xƒ(x) = 2(1.3)xƒ(x) = (-3)x
answered Apr 26, 2017
6 votes
41.8k views
Which of the following does not contribute to increased air quality? A. The Clean Air Act B. Hybrid cars C. Energy-efficient appliances D. Use of CFCs
answered Jan 13, 2017
7 votes
75.0k views
Which two inner planets have water in the form of ice?
answered Feb 1, 2016
3 votes
146k views
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