Imagine-um-alternate universe where the value of the Planck constant is 6.62607

Question

Imagine-um-alternate universe where the value of the Planck constant is 6.62607 × 10, JS. In that universe, which of the following objects would require quantum mechanics to describe Which objects would act like everyday objects, and be adequately described by classical mecha object quantum or classical? An alpha particle with a mass of 6.6 x 1027 kg, 8.0 x 10 15 m wide, moving at 17. km/s. quantum D classical A paper airplane with a mass of 4.2 9, 155. mm long, moving at 1.6 m/s. ® quantum classical quantum classical quantum A human with a mass of 90. kg, 2.5 m high, moving at 2.7 m/s A virus with a mass of 8.0 x 1017 g, 280. nm wide, moving at 1.90 m/s. Explanation

Explanation / Answer

1.quantum

2.classical

3.classical

4.quantum

When we are dealing with the microscopic value of quantities like speed or mass in part 1 and 4 of the problem then we need to apply the quantum mechanics while for the macroscopic values we apply our general knowledge of classical mechanics .

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