The de Broglie Wavelength

Formulas Used

Other Skills

• Unit conversions with metric prefixes
• Calculations with scientific notation

1. 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?
2. 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?
3. How slowly would a 4400 kg elephant have to walk in order to have a wavelength equivalent to visible light at 5.0 × 10² nm?
4. 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?
5. 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?