The O nucleus is unstable. To what will it decay?

A. N + e+ + ?

B. N + e+ + ?

C. N + e- +

D. N + e+ + ?

E. F + e- +


A. N + e+ + ?

Physics & Space Science

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A sound source approaches a stationary observer. The frequency heard by the observer is

A) higher than the source. B) lower than the source. C) the same as that of the source. D) equal to zero. E) impossible to predict.

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A charged particle (q = ?8.0 mC), which moves in a region where the only force acting on the particle is an electric force, is released from rest at point A. At point B the kinetic energy of the particle is equal to 4.8 J. What is the electric potential difference VB?VA?

A. ?0.60 kV B. +0.60 kV C. +0.80 kV D. ?0.80 kV E. +0.48 kV

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COBE found the cosmic microwave background to be absolutely uniform everywhere

Indicate whether the statement is true or false

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In a multielectron atom, which of the following levels is just above the 6s level?

A) 6p B) 7s C) 5p D) 4f E) 4d

Physics & Space Science