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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?
Answers: 1
Biology, 22.06.2019 13:00
How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans
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Biology, 22.06.2019 14:10
Select the correct answer.what is the observable characteristic of a person called? o a. genotypephenotypeoc.alleleo d.gene
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Which disease arises from amino acid change in the protein hemoglobins...
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