In beta minus decay, the number of neutrons in the nucleus is
A) decreased by 1.
B) decreased by 2.
C) increased by 1.
D) increased by 2.
E) remains unchanged.
A
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Which of the following statements is true of brown dwarfs?
A) They are almost the same size as Jupiter. B) They emit most of their energy as gamma rays. C) They generate energy by hydrogen fusion. D) They are high-luminosity objects.
Radioactivity Basics: Starting with 
U, assume that the following three decays occur in sequence:(1) alpha decay(2) beta-minus decay(3) alpha decayDetermine the correct isotope that is left after each decay.
What will be an ideal response?
The largest voids may span 300 million light years across
Indicate whether the statement is true or false
A gas is placed in a container, which is immersed in an ice-water mixture as shown below