Physics, 24.04.2020 23:42 davidcstro851
Fine sand particles are placed on a on a paper plate and the plate is set on top of a stereo speaker. The stereo is turned on and the music is played very loudly. The sand particles on the plate bounce around and arrange themselves in different patterns.
Answers: 1
Physics, 22.06.2019 15:10
What does si stand for,when referring to a system of measurement
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Physics, 22.06.2019 23:40
Which type of energy is transferred by convection currents?
Answers: 2
Physics, 23.06.2019 00:40
Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.
Answers: 1
Fine sand particles are placed on a on a paper plate and the plate is set on top of a stereo speaker...
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