An electron (m=9.11x10^-31 kg) moves in a circle whose radius is 2.00x10^-2 m. if the force acting on the electron is 4.60x10^-14 n, what is it's speed?

The speed of the electron is .

Explanation:

Given:

Mass of electron is,

Radius of circle is,

Force acting on the electron is,

Now, we know that, for a circular turn, the force acting on the electron is due to centripetal force. Centripetal force acting on the electron is given as:

Here, 'v' is the velocity of the electron.

Now, plug in all the given values and solve for 'v'. This gives,

Therefore, the speed of the electron is .

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305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures