Question
Why does a phonograph-record attract dust particles just after it is cleaned?
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Answer
When a phonograph record is cleaned, it develops a charge on its surface due to rubbing. This charge attracts the neutral dust particles due to induction.
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A nucleus $\frac{23}{10}$ Ne undergoes β− decay and becomes $\frac{23}{11}$.gif)
Na. Calculate the maximum kinetic energy of electrons emitted assuming that the daughter nucleus and anti-neutrino carry negligible kinetic energy.$\left\{\text{mass of} \frac{23}{10} Ne = 22.994466 u\right\}$
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→Na. Calculate the maximum kinetic energy of electrons emitted assuming that the daughter nucleus and anti-neutrino carry negligible kinetic energy.$\left\{\text{mass of} \frac{23}{10} Ne = 22.994466 u\right\}$$\left\{\text{mass of}\frac{23}{11}Na=22.989770u\right\}$
$\left\{ 1u = 931.5\text{MeV}/ c^{2}\right\}$