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 04:00
Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.
Answers: 3
Biology, 22.06.2019 06:00
Which is one example of a phenotypic change that is not genetic
Answers: 3
Biology, 22.06.2019 07:30
In which of the following relationships is one organism always benefited while the other organism is always harmed
Answers: 1
In plant and animal adaptations, form follows function. True or false?...
English, 30.09.2019 04:00
Physics, 30.09.2019 04:00
History, 30.09.2019 04:00
Mathematics, 30.09.2019 04:00
Social Studies, 30.09.2019 04:00
Social Studies, 30.09.2019 04:00
Chemistry, 30.09.2019 04:00
Chemistry, 30.09.2019 04:00
Mathematics, 30.09.2019 04:00
Chemistry, 30.09.2019 04:00