Which objects would act like everyday objects, and be adequately described by classical mechanics?

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter3: The Quantum Theroy Of Light
Section: Chapter Questions
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Imagine an alternate universe where the value of the Planck constant is 6.62607x10−36J·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?

A mosquito with a mass of 1.1 mg, 8.7 mm long, moving at 2.7 m/s.

A buckyball with a mass of 1.2 x 10-21 g, 0.7 nm wide, moving at 23. m/s.

An iceberg with a mass of 3.4 x 108 kg, 160. m wide, moving at 1.21 km/h.

An eyelash mite with a mass of 8.3 µg, 370 µm wide, moving at 27. µm/s.

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