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The de Broglie Wavelength

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  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?

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