Chapter 5, Problem 59SGA

To determine

To find:degrees travel in a second or in a minute.

Answer to Problem 59SGA

  $\frac{32,{400}^{\circ }}{\text{second}}\text{ and }\frac{1,944,{000}^{\circ }}{\text{minute}}$

Explanation of Solution

Given information: Technology: A computer’s hard disk is spinning at 90 revolutions per second.

Calculation:

  $\frac{90\text{ revolutions}}{\text{second}}$

This is how fast the disc is spinning. Each revolution is 360 degrees so in one second….

  $\frac{90\text{ revolutions}}{\text{second}}\times \frac{{360}^{\circ }}{\text{revolution}}=\frac{32,{400}^{\circ }}{\text{second}}$

Since there are 60 seconds in a minute

  $\frac{32,{400}^{\circ }}{\text{second}}\times \frac{60\text{ second}}{\text{minute}}=\frac{1,944,{000}^{\circ }}{\text{minute}}$

Thus,

  $\frac{32,{400}^{\circ }}{\text{second}}\text{ and }\frac{1,944,{000}^{\circ }}{\text{minute}}$