PHYS 1107 Lecture 1: calculus-for-engineering-or-physics-lecture-notes-math-1004-h-1

A laptop computer communicates with a router wirelessly, by meansofradio signals. The router is connected by cable directly totheInternet. The laptop is 8.8 mfrom the router, and is downloadingtext and images from theInternet at an average rate of 254 Mbps, or254 megabits per second. (A bit,or binary digit,is the smallest unit of digitalinformation.) On average, how manybits are downloaded to thelaptop in the time it takes the wirelesssignal to travel from therouter to the laptop?

bits

where is the center of mass of a baseball? where is its center of gravity?

1. What is meant by tangential speed

11.2 . The center of grav- Figure E11.2 ity of a 5.00-kg irregular ob- Center of ject is shown in Fig. E11.2. You need to move the center gravity of gravity 2.20 cm to the left by gluing on a 1.50-kg mass, ----- ----- which will then be considered as part of the object. Where should the center of gravity of this additional mass be located?