Question

The de Broglie wavelength of a 0.064-kg golf ball is 3.09 x 10^−34m. What is its speed? (h = 6.63 x 10^−34 J⋅s)

Answer 1

Answer:

The speed is 33.5 m/s.

Explanation:

Given that,

Mass = 0.064 kg

Wavelength $\lambda= 3.09\times10^{-34}\ m$

We need to calculate the speed

Using formula of he de Broglie wavelength

$\lambda=\dfrac{h}{mv}$

$v=\dfrac{h}{m\lambda}$

Where, h = Planck constant

m = mass

$\lambda$ = wavelength

Put the value into the formula

$v = \dfrac{6.63\times10^{-34}}{0.064\times 3.09\times10^{-34}}$

$v=33.5\ m/s$

Hence, The speed is 33.5 m/s.