What is the de-Broglie wavelength associated with (a) an electron moving with speed of `5.4xx10^6ms^-1`, and (b) a ball of mass 150g traveling at `30.0ms^-1`? `h=6.63xx10^(-34)Js`, mass of electron `=9.11xx10^(-31)kg`.

Explanation

To find the de-Broglie wavelength associated with the given particles, we will use the de-Broglie wavelength formula:

\[ \lambda = \frac{h}{p} \]

where \( \lambda \) is the wavelength, \( h \) is Planck's constant, and \( p \) is the momentum of the particle. The momentum \( p \) can be expressed as:

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