SAT Subject Physics Practice Question 318: Answer and Explanation

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Question: 318

14. A carbon atom decays into a nitrogen atom in the equation below. Which of the quantities correctly finishes the equation?

A. Alpha
B. Beta
C. Gamma
D. Neutron
E. Neutrino

Correct Answer: B


The correct answer is (B). The carbon atom changes into a nitrogen atom. This conversion can only occur if a neutron emits a beta particle as it changes into a proton.

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