What two horizontal forces are present as a child pulls a wagon?
push, friction
pull, frict...
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Physics, 22.06.2019 05:30
An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?
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Physics, 22.06.2019 16:20
Select the correct answer. what does the process of natural selection involve?
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Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging
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