Biology, 10.10.2019 13:10 payshencec21
When pushing a child on a swing, you must give them a push periodically to keep them moving. this seems to go against the law of inertia and the conservation of energy. why does the child need a push periodically to keep moving.
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 08:30
Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass
Answers: 3
Biology, 22.06.2019 10:00
What organ is the first to receive nutrients that have been absorbed from the digestive tract?
Answers: 1
Biology, 22.06.2019 18:00
The most effective way to provide children with safety messages is to
Answers: 2
When pushing a child on a swing, you must give them a push periodically to keep them moving. this se...
Mathematics, 21.01.2021 01:00
Mathematics, 21.01.2021 01:00
Mathematics, 21.01.2021 01:00
Mathematics, 21.01.2021 01:00
Mathematics, 21.01.2021 01:00
History, 21.01.2021 01:00
Social Studies, 21.01.2021 01:00
Geography, 21.01.2021 01:00
Physics, 21.01.2021 01:00
History, 21.01.2021 01:00
English, 21.01.2021 01:00