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Biology, 22.10.2019 23:30 kaanan8984
Use the drop-down menus to complete the statements.
the of light is the rate at which light travels through empty space, or about 300,000 km per second.
a light-year is a measurement of .
the distance between stars is measured in light-years rather than in miles or kilometers because the distance between stars .
answers: light, distance, is very large
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Biology, 22.06.2019 02:30, ComicSans10
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
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Biology, 22.06.2019 17:30, TanelleK9546
Which of the following is not a technology that can be used to conserve resources? a. hydropower b. volcanic power c. natural gas d. geothermal select the best answer from the choices provided a b c d
Answers: 1
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Use the drop-down menus to complete the statements.
the of light is the rate at which li...
the of light is the rate at which li...
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