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  1. T

    Forces and Vectors

    well we were learning it with the paralellogram law of addition...none of the fsintheta stuff.........don't get why and how your using the angles in the fsintheta+fsinalpha=0 equations.....
  2. T

    Forces and Vectors

    -t1cosA+t2cosB=0 You don't know that it's equal zero when your doing the question though.....so why did you assume its zero? ......:D I'm sorry but I'm having a hard time comprehending this shizzle.......Um like I have question all over the place, why - in front? Why are you adding stuff lol...
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    Forces and Vectors

    lol i know how to draw free-body diagrams but then I don't know what you want me to add up......how you get fsin whatever......whats ur adding there not sure.....btw this is grade 12
  4. T

    Forces and Vectors

    ok first of all lol i don't know what "point of application" is exactly. And I don't know how to draw the diagram your talking about. I don't know what i'm adding I'm confused lol......In my answer I had a right triangle with the force 375 going in the same way as the tension force.
  5. T

    Forces and Vectors

    sorry but I don't get how you got t1cos90+t2cosA=0
  6. T

    Forces and Vectors

    yes you have but if you actualy do the question and try finding the angles you find that one is 90 degrees :D. So now you have a different diagram right?
  7. T

    Forces and Vectors

    mr.mattson trust me one part of the wire is 375 and the other is 0
  8. T

    Forces and Vectors

    I've had a bit of a problem with the following question. I have the answer I did it properly except for one part i can't comprehend. A steel wire 40m long is suspended between two fixed points 20m apart. A force of 375N pulls the wire down at a point 15m from one end of the wire. State the...
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    Calculus-Remainder Theorem

    omg dude no I get another answer..........can you tell me your answer if it's so easy lol
  10. T

    Calculus-Remainder Theorem

    Sorry but I'm still not clear on that. I know that to find a value thats divisible in an equation you try f(x) and if that equals 0 in the equation its divisible. In my case its x^3+5x^2+6x+11 so the only things i try are the last number 11. (+-1, +-11) and that doesn't equal 0..........Explain...
  11. T

    Calculus-Remainder Theorem

    Find the value of m so that when x^3+5x^2+6x+11 is divided by (x+m) the remainder is 3. Im having so much diffculty with this and it's so frustrating can anyoen help Thomas
  12. T

    Elementary Charge

    so its (1.602x10^-19)(10^8)=charge?
  13. T

    Elementary Charge

    so what would q be? Whats the charge on both spheres?
  14. T

    Elementary Charge

    Calculating charge and force of electric repulsion Calculate the force of electric repulsion between two small spheres placed 1m apart if each has a deficit of 1x10^8 electrons. I tried this and only got r=1m and N=1x10^8 I don't know the equation needed for this please help.. Thomas
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    How do you find a normal of a direction vector in 3 space?

    or maybe ur right .....thats the plane......but not the answer I'm not sure how to find the normal.....(1,0,0)cross what? to get a normal.....then after that put the (x,y,z) values in the equation Ax+By+Cz+D=0 Then find D by inserting the point (4,-2,1) and you've got the equation? Is...
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    How do you find a normal of a direction vector in 3 space?

    hallsofivy.....that is not the answer.......I think you are wrong.......can you please make it a bit more clear on the steps made to get the answer. for my first question ok sorry maybe I worded it wrong....how do i find a normal plane of a direction vector in 3 space?
  17. T

    How do you find a normal of a direction vector in 3 space?

    Question #1. How do you find a normal of a direction vector in 3 space? Question #2.: What is the scalar equation of the plane that contains the x-axis and the point (4,-2,1)?
  18. T

    Solve This

    omfg so gay
  19. T

    Solve This

    Solve This!! This question is driving me crazy. I've tried so many things... 2^{2x}-12(2)^x+32=0 PLEASE HELP ME PLEASE I've got a test tommorow :D
  20. T

    Easy Question

    ;) got it thanks mr.
  21. T

    Easy Question

    vincent I know that but there is a x^2 underneath! The answer in the book is (1+\frac{5}{x})(1+\frac{3}{x})
  22. T

    Easy Question

    sorry :) LOL ....ya a banana.....ok just simplify.
  23. T

    Easy Question

    sorry :) LOL ....ya a banana.....ok just simplify
  24. T

    Easy Question

    find x: 1+8x^{-1}+15x^{-2} I've got so far: \frac{x^2+8x+15}{x^2}
  25. T

    Determine half-life of this substance

    Ok I did that and got an answer of 5.95 but thats not the answer SOMEONE HELP
  26. T

    Determine half-life of this substance

    ok thank you but by the way whats wrong with my latex: "M=M_{o}\frac{1}{2}^\frac{t}{h}"
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    Determine half-life of this substance

    A substance decays from 20g to 15g in 7h.Determine the half-life of the substance. I know that: M=M_{o}\left\frac{1}{2}\right^\frac{t}{h}
  28. T

    Need help with Logarithm

    how you got 1/2log_3A
  29. T

    Need help with Logarithm

    damnit all of you gave me different ways but now I'm confused ....can someone really go easy step by step I tried something else. DOn't know if its right but how do I prove: log_9a=2log_3a
  30. T

    Need help with Logarithm

    nm holy ****.....how would I know to set y to that? and so how does 2log_9x=log_3x?
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