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ki77a [65]
3 years ago
9

If you have just combed your hair and you hold the comb near a small, uncharged object, what will most likely happen?

Physics
2 answers:
AnnyKZ [126]3 years ago
8 0
It won't happen anything i think it will just be a something like a small thing
mihalych1998 [28]3 years ago
7 0
Nothing will happen, because if you comb your hair the comb will have an electric charge and it needs an opposite electric charge for anything to happen.
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F = 2.0*10^20 N,
natka813 [3]

F=\dfrac{Gm_1m_2}{r^2}

With the given values of F,G,m_1,r, we have

2.0\times10^{20}\,\mathrm N=\dfrac{\left(6.67\times10^{-11}\,\frac{\mathrm{Nm}^2}{\mathrm{kg}^2}\right)\left(5.98\times10^{24}\,\mathrm{kg}\right)m_2}{\left(3.8\times10^8\,\mathrm m\right)^2}

Try dealing with the powers of 10 first: On the right, we have

\dfrac{10^{-11}\times10^{24}}{(10^8)^2}=\dfrac{10^{24-11}}{10^{16}}=10^{-3}

Meanwhile, the other values on the right reduce to

\dfrac{6.67\times5.98}{3.8^2}\approx2.76

Then taking units into account, we end up with the equation

2.0\times10^{20}\,\mathrm N=\left(2.76\times10^{-3}\,\dfrac{\mathrm N}{\mathrm{kg}}\right)m_2

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m_2=7.25\times10^{22}\,\mathrm{kg}

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