A Sample of an Ideal Gas Is Heated and Its $\sqrt { 2 }$

Multiple Choice

A sample of an ideal gas is heated and its Kelvin temperature doubles. If the root-mean-square speed of its molecules was originally v, what is the new root-mean-square speed?

A) 4v
B) 2v
C) v $\sqrt { 2 }$
D) v/ $\sqrt { 2 }$
E) v/4