Approximately How Fast Is an Ion of Helium Moving If

Multiple Choice

Approximately how fast is an ion of helium moving if it is in a plasma with a temperature of 10⁸ K? m(He) = 4.002 603 u and u = 1.66 × 10−²⁷ kg.

A) 10⁶ m/s
B) 10⁴ m/s
C) 10² m/s
D) 10 m/s
E) 1 m/s