From a cliff that is 8.2 m above a lake, a young woman (mass 42 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength?
v =sqrt(2•g•h) =
= sqrt(2•9.8•8.2) =12.7 m/s.
p= m•v = 42•12.7=532.5 kg•m/s,
λ=h/p = 6.63•10^-34/532.5 = 1.24•10^-36 m