Imagine an alternate universe where the value of the Planck constant is 6.62607

Question

Imagine an alternate universe where the value of the Planck constant is 6.62607 x 1039 J. 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? object quantum or classical? An atom with a mass of 1.0 x 10-27 kg, 193. pm wide, moving at 315. m/s. O classical O quantum A paper airplane with a mass of 4.3 9, 180. mm long, moving at 2.9 m/s. O classical O quantum An airplane with a mass of 1.50 x 104 kg, 16.0 m long, moving at 900. km/h. O classical O quantum A virus with a mass of 5.6 x 10-17 g, 200. nm wide, moving at 2.00 pm/s. O classical O quantum

Explanation / Answer

According to DeBrogli's concept,

wave length = h / mv

SO, smaller is the mass and velocity, higher the wave nature of the particle and hence is studied by quantum mechanics.

SO,

1. Quantum echanics bucause of smaller mass higher is the wave length

2. Classical mechanics becuase of higher mass not measurable wave nature

3. Classical mechanics because of high mass and not measurable wave nature

4. Quantum mechanics ecause of smaller mass.

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