Biology, 25.06.2019 23:50 taylorrsmithh
An alternating current consists of charges that a. turn on and off repeatedly. b. move back and forth in a circuit. c. flow in one direction only. d. flow in one direction in some devices and change direction in others.
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Biology, 22.06.2019 02:30
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?
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Biology, 22.06.2019 09:30
How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?
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Biology, 22.06.2019 11:00
You want to cultivate some exotic plants at your farm. however, the climate is chillier than the temperature range favorable to the crop. which is the best method to use for the cultivation of this exotic crop? a. use a crop rotation method b. use a lot of fertilizer c. prepare the seed bed properly d. use a greenhouse e. use irrigation
Answers: 1
Biology, 22.06.2019 12:30
Are the layers of rock above and below the coal older or younger?
Answers: 1
An alternating current consists of charges that a. turn on and off repeatedly. b. move back and fort...
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