Special relativity — Question 123
Original QCE Vault practice · 1 mark
Q123 · Practice questionSimple familiar1 mark
QUESTION 123
The energy equivalent of 2.0 micrograms of mass is closest to (A)6.0×102J (B)1.8×108J (C)1.8×105J (D)9.0×1016J WORKED SOLUTION
Answer B
1 markANSWERB. 1.8×108J Worked solution
m=2.0×10−9kg and E=mc2=(2.0×10−9)(3.0×108)2=1.8×108J. Selects the correct option.
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