To which category does galaxy #1 belong? Why does it belong in this category?
To which c...
To which category does galaxy #1 belong? Why does it belong in this category?
To which category does galaxy #2 belong? Why does it belong in this category?
To which category does galaxy #3 belong? Why does it belong in this category?
To which category does galaxy #4 belong? Why does it belong in this category?
To which category does galaxy #5 belong? Why does it belong in this category?
To which category does galaxy #6 belong? Why does it belong in this category
To which category does galaxy #7 belong? Why does it belong in this category?
To which category does galaxy #8 belong? Why does it belong in this category?
To which category does galaxy #9 belong? Why does it belong in this category?
To which category does galaxy #10 belong? Why does it belong in this category?
Answers: 2
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People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)
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Physics, 23.06.2019 00:40, maggie2018
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.
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