Question

in an x-ray machine an electron is subjected to a force of 10 to the power -23 Newton. in how much time the electron will cover a distance of 0.1 M ? take mass of the electron equal to 10 to the power minus 30 kg

Answer 1

Force on electron in X ray is given by

$F = 10 * 10^{-23} kg$

mass of electron is given as

$m = 10 * 10^{-31} kg$

now acceleration of the electron is given as

$a = \frac{F}{m}$

$a = \frac{10* 10^{-23}}{10* 10^{-30}}$

$a = 10^7 m/s^2$

now the distance covered is given by

$d = \frac{1}{2}at^2$

given that d = 0.1 m

$0.1 = \frac{1}{2}* 10^7 t^2$

$t^2 = 2 * 10^{-8}$

$t = 1.4 * 10^{-4} s$

so the time taken by the electron is 0.14 ms

Answer 2

Answer:

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Explanation: