Imagine an alternate universe where the value of the Planck constant is 6,.62607
ID: 579445 • Letter: I
Question
Imagine an alternate universe where the value of the Planck constant is 6,.62607 x 101 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? object quantum or classical? A raindrop with a mass of 10.0 mg, 6.1 mm wide, moving at 7.9 m/s quantum classical O quantum An alpha particle with a mass of 6.6 x 1027 kg, 8.0 x 10-15 m wide, moving at 12. km/s. A virus with a mass of 5.7 x 10-17 g, 20. nm wide, moving at 1.00 m/s. casscal quantum classical O quantum An iceberg with a mass of 4.2 x 108 kg, 140. m wide, moving at 1.00 km/h.Explanation / Answer
According to de Broglie's concept,
wave length = h / (m*v)
So, smaller is the mass and velocity , higher is the wave length and hence is required quantum mechanics.
1.
Classical mechanics, because of moderate mass and velocity, its wave length is too small and cannot be measurable.
2.
Quantum mechanics, because of smaller mass and velocity its wave length is high and measurable.
3.
Quantum mechanics due to smaller mass and velocity
4.
Classical mechanics due high mass its wave length cannot be measurable.