Electron/positron Pairs Are Occasionally Created Out of Empty Space

question 32

Multiple Choice

Electron/positron pairs are occasionally created out of empty space.Looking at energy-time uncertainty,how long would such particle pairs be expected to last? The mass of the electron is 9.11 * 10^-31 kg.

• A)3.2 * 10^-22 s
• B)6.4 * 10^-22 s
• C)1.2 * 10^-21 s
• D)2.5 * 10^-5 s
• E)5.8 * 10^-5 s

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