Question

Imagine an alternate universe where the value of the Planck constant is 6.62607·10^8 J·s

.In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics?

1. A buckyball with a mass of 1.2 x 10^-21 g, 0.7 nm wide, moving at 16. m/s.

Classical or Quantum

2. An airplane with a mass of 1.58 x 10⁴ kg, 13.0 m long, moving at 800. km/h.

Classical or Quantum

3. A turtle with a mass of 720. g, 28. cm long, moving at 1.7 cm/s.

Classical or Quantum

4. An eyelash mite with a mass of 11.8 µg, 340 µm wide, moving at 50. µm/s.

Classical or Quantum

Answer 1

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