What is the wavelength of a ball that is 25.0 g traveling at 40.2 m/s?

Question

Quizplus · Accepted Answer

We can use de Broglie's equation to find the wavelength of the ball: 
wavelength = h/mv 
where h is Planck's constant, m is the mass of the ball, and v is its velocity. 
Plugging in the given values: 
wavelength = 6.626 x 10^-34 J·s / (25.0 g)(40.2 m/s) 
wavelength = 6.59 x 10^-34 m 
Therefore, the wavelength is approximately 6.59 x 10^-34 m, which is closest to choice B.

What Is the Wavelength of a Ball That Is 25