Question

Since quantum-mechanical theory is universal, it applies to all objects, regardless of size. Therefore, according to the de Broglie relation, a thrown baseball should also exhibit wave properties. Why don't we observe such properties at the ballpark?

(a) Because of the baseball's large mass, its de Broglie wavelength is minuscule and
insignificant compared to the baseball's size.
(b) Since baseballs do not have any charge, quantum mechanics does not apply to them.
(c) Quantum mechanics does not apply to baseballs.

Answer 1

The correct answer is Option A. The de Broglie wavelength of a thrown baseball is too small to be detectable and is insignificant compared to the baseball's size.

Step-by-step explanation:

The de Broglie relation in quantum mechanics states that all objects, regardless of size, have a wavelength. However, the wavelength of a thrown baseball is minuscule and insignificant compared to the baseball's size. The mass of the baseball is too large for the de Broglie wavelength to be detectable by our senses or any known instrument.