Chapter 1, Problem 28P

(a)

To determine

The factor by which $\Delta t$ will get larger or smaller if $d$ is made three times larger.

(b)

To determine

The pattern of proportionality of $\Delta t$ to $d$ does the equation predict.

(c)

To determine

The quantities that should be plotted on the horizontal and vertical axis to display the above proportionality as a straight line on a graph,

(d)

To determine

The slope of the above graph.