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

The speed is 33.5 m/s.

Step-by-step explanation:

Given that,

Mass = 0.064 kg

Wavelength
`\lambda= 3.09*10^(-34)\ m`

We need to calculate the speed

Using formula of he de Broglie wavelength

`\lambda=(h)/(mv)`

`v=(h)/(m\lambda)`

Where, h = Planck constant

m = mass

`\lambda` = wavelength

Put the value into the formula

`v = (6.63*10^(-34))/(0.064* 3.09*10^(-34))`

`v=33.5\ m/s`

Hence, The speed is 33.5 m/s.