# The de Broglie Wavelength

## Formulas Used

## Other Skills

- Unit conversions with metric prefixes
- Calculations with scientific notation

- The neighborhood cat begins chasing a mouse, pursuing it at a speed of 6.9 m/s. If the cat has a mass of 5.7 kg, what is its de Broglie wavelength?
- A 2.6 gram caterpillar crawls along a leaf at 0.39 cm/s. What is the caterpillar’s de Broglie wavelength during its crawl?
- How slowly would a 4400 kg elephant have to walk in order to have a wavelength equivalent to visible light at 5.0 × 10
^{2}nm? - The mass of an electron is 9.1 × 10
^{-31}kg. At what speed would an electron have a de Broglie wavelength of 580 nanometers? - Suppose that a polar bear cub is running at 5.7 m/s. If its de Broglie wavelength while running is 1.70 × 10
^{-36}m, what is its mass?

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