What is pair production? Choose the best answer.

A) Energy turns into a particle and its corresponding antiparticle.
B) Energy turns into two copies of identical particles.
C) A particle splits into two completely different particles.
D) Two antimatter particles turn into ordinary matter.
E) A particle splits into two copies of itself.


A) Energy turns into a particle and its corresponding antiparticle.

Physics & Space Science

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Physics & Space Science

A 40-?C charge is positioned on the x axis at x = 4.0 cm. Where should a ?60-?C charge be placed to produce a net electric field of zero at the origin?

A. ?5.3 cm B. 5.7 cm C. 4.9 cm D. ?6.0 cm E. +6.0 cm

Physics & Space Science

A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected?

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Physics & Space Science