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Fiesta28 [93]
3 years ago
5

The average distance an electron travels between collisions is 2.0 μmμm . What acceleration must an electron have to gain 2.0×10

−18 JJ of kinetic energy in this distance?

Physics
2 answers:
Serjik [45]3 years ago
8 0

Answer:

a=1.1*10^{18}\frac{m}{s^2}

Explanation:

We use the following kinematic formula to calculate the acceleration:

v_f^2=v_0^2+2ax

The kinetic energy is defined as:

\Delta K=\frac{m(v_f^2-v_0^2)}{2}\\v_f^2-v_0^2=\frac{2\Delta K}{m}

Replacing this in the acceleration formula and solving for a:

\frac{2\Delta K}{m}=2ax\\a=\frac{\Delta K}{mx}\\a=\frac{2*10^{-18}J}{(9.1*10^{-31}kg)(2*10^{-6}m)}\\a=1.1*10^{18}\frac{m}{s^2}

Ilya [14]3 years ago
4 0

The solution is in the attachment

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