A) \[\sqrt{54/4}\]
B) \[\sqrt{54/2}\]
C) 3.5
D) \[3\sqrt{3}\]
Correct Answer: A
Solution :
[a] \[{{v}_{rms}}={{\left[ \frac{{{\left( 2 \right)}^{2}}+{{\left( 3 \right)}^{2}}+{{\left( 4 \right)}^{2}}+{{\left( 5 \right)}^{2}}}{4} \right]}^{1/2}}\] \[=\sqrt{\left[ \frac{54}{4} \right]}\]
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