15_2 tutor

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15_2 tutor

Post  physux on Sat Feb 21, 2009 8:45 pm

hey guys...anyone know how to do #5 and #7 on this quiz? for #5, i can't figure out what expres​sion(4) is supposed to be in order to solve for the total force. and for #7, i don't get it starting from the f=r2/r1 ratio part. Can someone help please??

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Re: 15_2 tutor

Post  =P on Mon Feb 23, 2009 11:50 pm

this is the equation for #5 eq. 4..... im still stuck on #6 tho so i havent really looked at 7 yet....

sqrt(2)*k*q*Q/d^2

=P
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How to login?

Post  Pattycak on Thu Feb 26, 2009 6:13 am

How do you login?

Username: student1 (?)
Password: teachmephysics (?)

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Re: 15_2 tutor

Post  guest_01 on Sat Feb 28, 2009 5:10 pm

username: pstudent1
pswd: teachmephysics

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output variable

Post  guest00 on Sat Feb 28, 2009 6:01 pm

anyone know the output variable for number 2? i've tried cancelling the two equations and looking on the cd but it's confusing. is it just simple algebra? i got (q_1*q_3*k)/(x_3-x_1)^2=(q_3*q_2*k)/(x_2-x_3)^2 after cancelling, it should be q_1/(x_3-x_1)^2=q_2/(x_2-x_3)^2 i don't know how to continue or what to fix. PLZ HELP!!! thank you Very Happy

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Re: 15_2 tutor

Post  cool sit on Sun Mar 01, 2009 12:13 am

hey guys, when you have time you should check out my website

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Re: 15_2 tutor

Post  guestie on Sun Mar 01, 2009 1:54 am

What site? What's the output variable for all the way at the bottom of Question 2?

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Re: 15_2 tutor

Post  S on Sun Mar 01, 2009 7:58 pm

Is anybody willing to post answers for the 15-2 tutor? I have NO idea what some of the questions are asking.... Thanks in advance.

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Question Number 7

Post  hd on Sun Mar 01, 2009 9:04 pm

f=r_2/r_1 is simply sqrt(k*Q/E_2)/sqrt(k*Q/E_1)

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S

Post  super mo on Sun Mar 01, 2009 10:03 pm

You must ask in order to recieve. What are you specifically having problems with?

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Re: 15_2 tutor

Post  Guest__1 on Sun Mar 01, 2009 10:18 pm

Just bottom of question 2 on 15_2... the output variable

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Guest_1

Post  super mo on Sun Mar 01, 2009 10:29 pm

output is on the Proff blog: q_2*(x_3-x_1)^2/(x_2-x_3)^2
...taking a break - check in later. Sleep

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Re: 15_2 tutor

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