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Medical Admission Model Test 95
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Question 1 of 100
Chemistry
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What is the mass of an electron moving at a speed of? √3 2 c
A
9.1 × 10−31kg
B
18.2 × 10−27kg
C
18.2 × 10−31kg
D
9.1 × 10−62kg m = m0 √1− v2 c2 = 9.1×10−31 √1− ( √3c 2 ) 2 c2 = 9.1×10−31 √1− 3 4 = 9.1 × 10−31 × 2 ∴ m = 18.2 × 10−31kg
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