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Physics, 21.06.2019 22:30
Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations. in what way do laboratory experiments primarily differ from other forms of scientific investigations? a. a laboratory experiment is the only accepted form of investigation within the scientific community. b. studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments. c. laboratory experiments involve the identification and control of variables. d. data can only be generated through laboratory experiments, not other forms of investigation.
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Physics, 22.06.2019 11:50
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
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Physics, 22.06.2019 12:10
Point charges q1 = 51 Β΅c and q2 = β27 Β΅c are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 Β΅c placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
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Physics, 22.06.2019 17:40
The first-order reaction aβ2b+c has rate constant 0.538 sβ1. if the initial concentration of a is 0.867 mol lβ1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
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A hot air balloon and its basket together weigh 300 N and it contains hot air weighing 17000 N. If t...
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