Chapter 11, Problem 11.113QP

Interpretation Introduction

Interpretation:

The speed of the target is moving, the time it takes for the target to travel and the speed of the Bi atoms has to be calculated.

Concept introduction:

Root mean-square speed is the parameter to measure the speed of particles in a gas. M is the molecular mass of the molecule at temperature T, root mean-square speed (${\text{u}}_{\text{rms}}$) has to be calculate using the formula

${\text{u}}_{\text{rms}}\text{=}\sqrt{\frac{\text{3RT}}{\text{M}}}$

The speed at which the target is moving equals:

Speed of target = circumference × revolutions/second