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Physics, 22.06.2019 08:00
Who was the first scientist to measure speed as distance over time?
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Physics, 22.06.2019 14:30
Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.
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Physics, 23.06.2019 00:00
You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?
Answers: 3
As air on the surface of earth warms the density of the air...
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