Two electrons are initially at rest separated by a distance of 2nm. at time t=0, they start to move apart due to coulombic repulsion. how long does it take for them to separate to a distance of 20nm?

Explanation:

We know that charge on electron

r= 2 nm

We know that force between two charge given

Now by putting the value

We know that mass of electron

The mass of electron

F= m a

a= Acceleration of electron

a= F/m

initial velocity given that zero ,u=0

explanation:

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d. platinum would have the greatest temperature increase because it has the lowest specific heat.