Question

http://screensnapr.com/v/UyQltZ.png
How to do it?

Answer 1

Do you not have a calculator?

Answer 2

No =[

Answer 3

There are free ones online. Use one.

Answer 4

Go to wolframalpha and type it in.

Answer 5

With the i and j?

Answer 6

NO

Answer 7

Well it might be that good :(

Answer 8

Anyway I know you have a calculator.

Answer 9

And I hate it when people lie to me.

Answer 10

I honestly don't right now, calculator is at my girlfriends house.

Answer 11

Check my house! :P

Answer 12

You're too young to have a girlfriend.

Answer 13

16.

Answer 14

Exactly.

Answer 15

35sqrt(3)-35

Answer 16

Last time I got off topic like this I was warned, so let's get back to math:)

Answer 17

60.6i-35j

Answer 18

We're back

Answer 19

Now do the others in the same way and add them up and we can talk.

Answer 20

And then we do sqrt(60.6^2+35^2)=whatever for the magnitude

Answer 21

yes

Answer 22

And tan^-1(jcoefficient/i coefficient) for the angle

Answer 23

So for the arctan, I.E, 35/60.6?

Answer 24

What did you get when you added the three vectors?

Answer 25

And then 30 degrees is the answer?

Answer 26

I don't know. If those numbers are correct, then yes. But I did not check them.

Answer 27

Well I didn't do dat part =[

Answer 28

The word is THAT not dat

Answer 29

from 70(sqrt(3)/2)+70(-1/2)j=35sqrt(3)-35=sqrt(60.6^2+35^2)=69.9

Answer 30

So you didn't add the vectors?

Answer 31

No.

Answer 32

Why not?

Answer 33

That was the entire reason for converting them to the i-j form...so we could add them.

Answer 34

What have you been doing for the last 1 1/2 hours/

Answer 35

Besides wasting time, that is.

Answer 36

Throwing up.

Answer 37

whatever

Answer 38

Making it up again.

Answer 39

Right.

Answer 40

I don't understand why we are adding the three vectors together.

Answer 41

28.28i +28.28j
That's the second one.
.-42.43i + 42.43j
That's the third one.
we are adding them because that is the way you find the combined force.

Answer 42

Nevermind, resultant. sorry.

Answer 43

Now add them up and get on with it. Where is your mother?

Answer 44

Sleeping?

Answer 45

Get those vectors added!!

Answer 46

60.6i-35j
28.28i +28.28j
-42.43i + 42.43j
<46.45,36.71>

Answer 47

I got 35.71j

Answer 48

Sorry i typed 43.43 instead of 42.43

Answer 49

Now find the magnitude.

Answer 50

sqrt(46.45^2+35.71^2)=58.5~

Answer 51

Yep
Not find the direction

Answer 52

Now I meant

Answer 53

arctan(35.71/46.45)=37.55 degrees

Answer 54

Yep

Answer 55

Thank you so much, i'll review this when I wake up in the morning so it actually makes sense.

Answer 56

Now find another problem to do and practice what you have learned.
What city do you live in?

Answer 57

Near Tampa Florida.

Answer 58

And quit saying DAT say THAT instead

Answer 59

Good luck.

Answer 60

Good luck on?

Answer 61

School in particular and life in general

Answer 62

Thanks, I don't plan on majoring in math so don't worry. Last year of highschool math for me. And Vectors just don't make any sense to me.

Answer 63

They are good discipline for the mind. Study them until you master them. The more you know the further you go.

Answer 64

Thanks for all the help :D But talking about way back, sixteen isn't too young to have a girlfriend.

Answer 65

It may not be to young to have a girl friend but it is too young to go on dates and neck and all those distracting things. Remember...the surest route to poverty is to have a baby before you are married,and to not get an education.