Question

the charge on uranium nucleus is 1.5×10^-17c and charge on alpha particle is 3.2×10^-19c what is electrostatic force between a uranium nucleus and an alpha particle separated by 1.0×10^-13m? And with solution plz
A. 4.3×10^-11N
B. 4.3×10^-20N
C. 4.3N
D. 4.3×10^10N

Answer 1

Answer:

correct answer B

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Answer 2

The correct answer is 4.32N.

Given: Charge of Uranium nucleus = $1.5*10^{-17} C$

Charge on alpha particle = $3.2*10^{-19} C$.

Distance between the two charges = $1.0*10^{-13}$m.

To Find: Electrostatic force between two charges.

Solution:

$F = \frac{k*q_{1*}q_{2} }{r^{2} }$

K = $9*10^{9}$

Put the values of all terms.

= $\frac{9*10^{9}* (3.2*10^{-19}) *(1.5*10^{-17} )}{(1.0*10^{-13})^{2} }$

= $\frac{9*3.2*1.5*10^{-27} }{10^{-26} }$

= $43.2*10^{-1}$

= 4.32 N

Hence, the electrostatic force is 4.32N.

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