You decide to roll a $0\mathrm{.}11-$kgkg ball across the floor so slowly that it will have a small momentum and a large de Broglie wavelength.

Part A

If you roll it at $8\mathrm{.}0104$m$/$s$8\mathrm{.}0104$m$/$s$,$ what is its wavelength?

How does this compare with the de Broglie wavelength of the high$-$speed electron that strikes the back face of one of the early models of a TV screen at $1/10$ the speed of light $(2\mathrm{.}41011$m$2\mathrm{.}41011$m$)?$