An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. It therefore has ______ neutrons in its nucleus.
2 answers:
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Answer:
frequency
Explanation:
The phenomenon of apparent change in frequency due to the relation motion between the source and the observer is called Doppler's effect.
So, when we move farther, the frequency of sound decreases. The formula of the Doppler's effect is
where, v is the velocity of sound, vs is the velocity of source and vo is the velocity of observer, f is the true frequency. f' is the apparent frequency.
Electric potential energy of a dipole is given as
so change in the potential energy is given by
here initially it was parallel to electric field while finally it is perpendicular to the electric field
so we have
so above is the change in potential energy of dipole