An Electron (Q =+E)and a Positron (Q = +E)can Combine

question 45

Multiple Choice

An electron (q =+e) and a positron (q = +e) can combine to give off two gamma rays.The net change in the algebraic sum of the charges is

• A)+2e
• B)zero
• C)-2e
• D)+e
• E)-e

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Copper

A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, used in many alloys and as electrical conductors.

Zinc

A metallic chemical element with the symbol Zn and atomic number 30, used in alloys and as a protective coating for iron and steel.

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