Imagine an alternate universe where the value of the Planck constant is 6.6207 x 10^-36 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?
3.A turtle with a mass of 450. g, 29. cm long, moving at 2.7 cm/s.
quantum or classical?

See explanation

Explanation:

According to Louis de Broglie, particles could exhibit wavelike properties and have an associated wavelength.

Now for a turtle with a mass of 450. g, 29. cm long, moving at 2.7 cm/s, recall that we can only describe a by quantum mechanics when the body is very small and its associated wavelength is large.

This object has a large mass, hence it is discussed by classical rather than quantum mechanics

your answer would be a. 12.5 kg

what's the