An electron and a $5\mathrm{.}20$ kg bowling ball each have $3\mathrm{.}70$ eV of kinetic energy.

HINT

$($a$)$

Calculate

$$e$,$

the de Broglie wavelength of the electron $($in m$).$

m

$($b$)$

Calculate

$$b$,$

the de Broglie wavelength of the bowling ball $($in m$).$

m

$($c$)$

Calculate the wavelength

$$p

of a $3\mathrm{.}70$ eV photon $($in m$).$

m