Biology, 13.07.2019 12:30 lashaydews12
Astudent is measuring the effects of an electric circuit on a compass, and he is testing to see if increasing the current will cause the compass needle to change its direction faster. he does one trial using a 9-volt battery and another trial using a 1.5-volt battery. he takes accurate data. based on good experimental design, which would improve his experiment? he should repeat the test with three additional batteries of varying voltages to demonstrate the reproducibility of results. he should use batteries of the same voltage but from different manufacturers, to show he has used different variables. he should add a nonworking compass to act as a control. he should use only one battery but do several trials, using different circuit designs to ensure he has appropriate test groups.
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Explain two reasons you think it is important for scientists to search for new ways to treat cancer
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Anurse is caring for a client who is learning how to take care of a newly created colostomy. when observing a return demonstration of the colostomy irrigation, the nurse evaluates that more teaching is required when the client carries out what procedure?
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4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.
Answers: 2
Astudent is measuring the effects of an electric circuit on a compass, and he is testing to see if i...
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