How to Calculate and Solve for Velocity | De Broglie’s Law

The image above represents velocity.

To compute for velocity, three essential parameters are needed and these parameters are Planck’s Constant (h), Wavelength (λ) and Mass (m).

The formula for calculating velocity:

v = h / λm


v = velocity
λ = wavelength
h = Planck’s constant
m = mass

Let’s solve an example;
Find the velocity when the wavelength is 10, the planck’s constant is 6.626e-34 and the mass is 5.

This implies that;

λ = wavelength = 10
h = Planck’s constant = 6.626e-34
m = mass = 5

v = h / λm
v = 6.62607004e-34 (10)(5)
v = 6.62607004e-34 (50)
v = 1.33e-35

Therefore, the velocity is 1.33e-35 m/s.

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the velocity.

To get the answer and workings of the velocity using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.

You can get this app via any of these means:

Web –

To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via

Android (Paid) –
Android (Free) –
Apple (Paid) –
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Basic Chemistry under Chemistry.

Now, Click on De Broglie’s Law under Basic Chemistry

Now, Click on Velocity under De Broglie’s Law

The screenshot below displays the page or activity to enter your values, to get the answer for the velocity according to the respective parameters which is the Planck’s Constant (h), Wavelength (λ) and Mass (m).

Now, enter the value appropriately and accordingly for the parameter as required by the Planck’s Constant (h) is 6.626e-34, Wavelength (λ) is 10 and Mass (m) is 5.

Finally, Click on Calculate

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the velocity and presents the formula, workings and steps too.

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