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  • What is the de Broglie wavelength of (b) a ball of mass 0.060 kg moving at a speed of 1.0 m/s.

Q: 11.15 (b) What is the de Broglie wavelength of a ball of mass 0.060\hspace{1mm}kg  moving at a speed of 1.0\hspace{1mm}m/s.

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The momentum of the ball is

\\p=mv\\ p=0.06\ kg\ m\ s^{-1}

De Broglie wavelength is

\\\lambda =\frac{h}{p}\\ \lambda =\frac{6.62\times 10^{-34}}{0.06}\\ \lambda =1.1\times 10^{-32}\ m

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