Answers: 2
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 19:50
Select the correct answer from each drop-down menu the images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that the archaeopteryx and bird have wings, while dinosaurs have limhe se it can be concluded that
Answers: 3
Biology, 23.06.2019 01:00
30 points! explain the 3 differences in the chart below: flowers cones spores 1. 1. 1. 2. 2. 2. 3. 3. 3. i am not sure what the differences between them are, if someone could explain that would be
Answers: 1
Question 14(Multiple Choice Worth 4 points)
(02.02 LC)
Which of these serves as a...
(02.02 LC)
Which of these serves as a...
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