1) Find the force between an electron and proton separated by a distance of 5*10^-11 m...

1) Find the force between an electron and proton separated by a distance of 5*10^-11 m (this is the setup of the so-called Bohr model of an atom)

2) An object has a total of 10^12 protons in it. How many electrons are in it if it has a net charge of -1C?

3) What electric field is needed (and what direction should it point) if I want to suspend an electron on earth's surface? (counteract the force of gravity on it)

Solutions

Expert Solution

answer :

(1) 92.16 × 10^-9 N

(2) 62.5 × 10¹⁷

(3) 55.798 × 10^-12 N/C.

genius_generous answered 1 year ago

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