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AP® Physics 1 & 2

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Wackyland

APPH12-5R18XJ

Everyone's favorite professor at the local university has just discovered a second universe he has called Wackyland.

To everyone's surprise, the elementary charge in Wackyland differs from the elementary charge ($e$) in our Universe.

In Wackyland, protons have a charge of $+5/2 e$ and neutrons still have a charge of $0 e$. It is determined that protons in Wackyland consist of 3 up quarks and 2 down quarks. Neutrons consist of 1 up quark and 4 down quarks.

In terms of $e$, what is the charge of an up quark and a down quark?

A

${ q }_{ down } = -25 e ; { q }_{ up } = +100 e$

B

${ q }_{ down } = +25 e ; { q }_{ up } = -100 e$

C

${ q }_{ down } = -1/4 e ; { q }_{ up } = +1 e$

D

${ q }_{ down } = +1/4 e ; { q }_{ up } = -1 e$