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You are asked to measure the amount of liquid held in a sports drink bottle. Which is an appropriate unit of measurement? A. grams B. milliliters C. milligrams D. centimeters User: You are asked to heat a chemical solution in an open test tube. You should make sure that the test tube is pointed A. away from nearby people. B. towards a sink or a bucket. C. so you can see the bubbles. D. at a 180° angle from ...
Weegy: B. milliliters User: You are asked to heat a chemical solution in an open test tube. You should make sure that the test tube is pointed A. away from nearby people. B. towards a sink or a bucket. C. so you can see the bubbles. D. at a 180° angle from the flame. (More)
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Asked 6/18/2012 6:47:37 AM
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What is the minimum number of data points an experiment should gather? A. one B. two C. three D. four
Weegy: C. three (More)
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Asked 6/18/2012 8:06:42 AM
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An experiment wants to find the wind speed that begins to lift an airplane. The strategy is to use a 1/32 scale model and wind tunnel. Why is this strategy valid? A. A wind tunnel is available for the experiment. B. The real airplane will not fit in the wind tunnel. C. The scale model matches the scale of the physical forces in the wind tunnel. D. An inexpensive scale model of the airplane is available through the local hobby shop.
Weegy: C. The scale model matches the scale of the physical forces in the wind tunnel. User: An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liquid in varying strength, or concentration of the tested substance. What would be a control observation in this experiment? A. the bottle with 0% concentration B. the bottle with the weakest concentration C. the bottle with the strongest concentration D. the bottle with the medium amount of concentration Weegy: A. the bottle with 0% concentration User: Sequential and ordered steps clearly define the procedure for an experiment. Why are experimental procedures so carefully defined? A. Each step of the experiment requires recording data. B. The steps are necessary to create a trend line through the data points. C. The steps help mark where an experiment can be resumed the next day. D. The clearly defined steps allow other scientists to perform the same experiment. Weegy: A. Each step of the experiment requires recording data. (More)
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Asked 6/18/2012 8:11:44 AM
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What is the solution set of the given equation? 4y - 6y + 9y = -2
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(2x – 1)(x + 7) = 0
Weegy: (2x + 1)(x + 7) = 0; 2x + 1 = 0; 2x = -1; x = -1/2; x + 7 = 0; x = -7; x = -1/2 or x = -7 User: x^2 ...
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