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The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass
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The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.
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Physics, 23.06.2019 00:00
You can melt ice by applying pressure because the solid/liquid line has a slope.
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Which is greater; a force of 10n or a force of 5 lbs?...
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