How Long Does It Take Light to Travel Across the Width

question 13

Multiple Choice

How long does it take light to travel across the width of a Pb nucleus of radius 7.1 fm?

• A)2.4 \(\times\) 10^-23 s
• B)1.2 \(\times\) 10^-23 s
• C)2.4 \(\times\) 10^-20 s
• D)4.7 \(\times\) 10^-23 s
• E)none of the above

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