Please derive and explain the formula below.
here,
N is the number of electrons
A...
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What changes would result in a decrease in the gravitational force between two objects? check all that apply.
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Two red blood cells each have a mass of 9.0 multiply.gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer
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Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
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Convection currents are caused by differences in what two things?
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