Imagine an alternate universe where the value of the Planck constant is ×6.62607·10−36Js . 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 turtle with a mass of 560. g, 29. cm long, moving at 2.4 cm/s.     classical quantum   An iceberg with a mass of 3.8 x 108 kg, 80. m wide, moving at 0.75 km/h.     classical quantum     A mosquito with a mass of 1.2 mg, 11.4 mm long, moving at 2.5 m/s.   quantum classical       A buckyball with a mass of 1.2 x 10-21 g, 0.7 nm wide, moving at 40. m/s.     classical quantum

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Imagine an alternate universe where the value of the Planck constant is
×6.62607·10−36Js
.

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 turtle with a mass of 560. g, 29. cm long, moving at 2.4 cm/s.

 

 
classical
quantum
 

An iceberg with a mass of 3.8 x 108 kg, 80. m wide, moving at 0.75 km/h.

 

 
classical
quantum
 
 

A mosquito with a mass of 1.2 mg, 11.4 mm long, moving at 2.5 m/s.

 

quantum
classical
 
 
 

A buckyball with a mass of 1.2 x 10-21 g, 0.7 nm wide, moving at 40. m/s.

 

 
classical
quantum
 
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