Physics, 03.02.2021 01:00 bunbun2913
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An experimenter completes an experiment on which is the best light bulbs to use in a certain type of lamp. He tries 4 different light bulbs in the same lamp. He turns the lamp on with each type of light bulb for the same amount of time.
What is the manipulated variable in this experiment?
the amount of time the lamp is on
the lamp
the light bulbs
the amount of energy used
Answers: 2
Physics, 22.06.2019 08:00, booitsmrradl3385
While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit
Answers: 2
Physics, 22.06.2019 15:30, championroof
What is a costume plot? why is it important to a film or theater production?
Answers: 3
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An experimenter completes an experiment on which is the best light bu...
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