We’re being asked to **calculate the speed** of a **455 kg** car and a de Broglie wavelength of **5.43 × 10 ^{–47} nm**.

Recall that the ** de Broglie wavelength (λ)** can be calculated using:

$\overline{){\mathbf{\lambda}}{\mathbf{=}}\frac{\mathbf{h}}{\mathbf{mv}}}$

where:

**h** = Planck's constant (6.626 × 10^{–34} kg • m^{2}/s)

**m** = mass (in kg)

**v** = velocity (in m/s)

The de Broglie wavelength of a 455 kg car is found to be 5.43 × 10 ^{–47} nm. Calculate the speed (m/s) of the car.

a) 26.8 m/s

b) 37.3 m/s

c) 2.68 × 10^{19} m/s

d) 3.73 × 10^{7} m/s

e) 3.00 × 10^{8} m/s

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the De Broglie Wavelength concept. You can view video lessons to learn De Broglie Wavelength. Or if you need more De Broglie Wavelength practice, you can also practice De Broglie Wavelength practice problems.

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