Question

1. Citing the source(s), look up and quote definitions of the Electric Field and voltage. From these sources and experimenting with the Applets, describe how the graphs would be different had you used a negative charge. Describe how the graphs would be different had you used 3 positive charges.

Answer 1

please help me!

Answer 2

Hi, I think the "citing" would be more adequately to search in a text book. You need help with describing the behaviour of 3 +charges in the stated electric field, right?

Answer 3

yes

Answer 4

Im trying to become familiar with the applet.

Answer 5

E-field sensor must be located at bottom left of applet too?

Answer 6

no that is on the top right side of the screen

Answer 7

I mean (according to your pdf) where should be placed the E/field sensor. As far as I learned, E field sensor is an utility that can be placed anywhere on applet's squared screen

Answer 8

It should be placed on the tape measure crosshair

Answer 9

I think i got it, look the jpg attached, I put 3 +charges at the center of the screen and used tape measure at 0,96m (your first measure according to your DOC lab report)

Answer 10

ok so what do i put for number 3?

Answer 11

I think you should repeat your measures (.96 m 1.11m 1.27m , etc) and type the values of E field and voltage in you report.

Answer 12

For your 1,27m measure, right?. I got E field=14.2 V/m

Answer 13

are u sure??? i couldnt get my computer program to work do u mind finding me the measurement u got

Answer 14

Im going to attach another JPG for 1,27m.

Answer 15

thanks

Answer 16

did you get it?

Answer 17

You cant run the applet in your computer? that's pretty weird. the remaining steps are straightforward, just repeat your measures and set excel to plot them.

Answer 18

ughh i dont know if i have the right data :( any way to check these measurements using equations

Answer 19

I dont think so, E field could be calculated if Force or potential are already given, in this case, the applet act as a measuring device so this data are experimental.

Answer 20

can u make sure you are doing the experiment absolutely correctly and provide me with 8 measurements

Answer 21

As I said previously, I put 3+charges at the center of applet's screen and used tape measure to match your previous measurings (as is stated in the pdf). thats what you were asking, isnt it?.

Answer 22

yah but now i think all my data is messed :(

Answer 23

I think you could repeat the entire process, that could be tedious but on other hand its repetitive and simple. I hope i had help you. best wishes.

Answer 24

I cant... my program wont work :(

Answer 25

Try using another browser, be sure to have java installed. if not, you can download it freely and install it, thats not a difficult task.

Answer 26

ok thanks....... I havent gotten any of my questions answered I will fail this assignment