<p>Calculate the de Broglie wavelength of a helium atom moving at a speed of 353 m s-1. This is the root-mean-square speed of helium atoms at 20 K.
Please put your answer in the form of x.xxE±y.</p>
<p>Calculate the de Broglie wavelength of a helium atom moving at a speed of 353 m s-1. This is the root-mean-square speed of helium atoms at 20 K.
Please put your answer in the form of x.xxE±y.</p>