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An electron is accelerated by a potential difference, reaching a speed of $6.0\times { 10 }^{ 6 }\text{ m/s}$.

What is a wavelength of a matter wave which is consistent with this information?

$\lambda =8.24\times { 1 }0^{ 9 }\text{ m}$

$\lambda =7.56\times { 10 }^{ 8 }\text{ m}$

$\lambda =6.89\times { 10 }^{ -22 }\text{ m}$

$\lambda =1.2\times { 10 }^{ -10 }\text{ m}$