Because the Factor H on the Right Side of the Heisenberg

question 18

Multiple Choice

Because the factor h on the right side of the Heisenberg uncertainty principle has units of Joule-seconds, it suggests that the energy of a system also has uncertainty.The uncertainty in energy depends on the length of the time interval during which a system exists. $\Delta$ E $\Delta$ t $\ge$ h/4 $\pi$ .Suppose an unstable mass is produced during a high-energy collision such that the uncertainty in its mass is me/100.(me = 9.11*10-31 kg.) How long will this particle exist?

• A)6.4 * 10-20 s
• B)2.3 * 10-23 s
• C)1.0 * 1015 s
• D)1.2 *1013 s
• E)8.1 * 10-19 s

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