Answers: 1
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?
Answers: 1
Biology, 22.06.2019 03:00
Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.
Answers: 2
Biology, 22.06.2019 11:30
Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan
Answers: 3
Biology, 22.06.2019 14:50
This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.
Answers: 1
In each transformation of energy , some energy what?...
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