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  1. A

    Forget the name of it, but i need a review

    oh did i say that? Sorry x2-1
  2. A

    Forget the name of it, but i need a review

    did you copy that down wrong? its (2x+1)/(x-1)+ 1/(x+1).
  3. A

    Forget the name of it, but i need a review

    that just confused me. i did what halls said and i got the answer you quoted. so i did it wrong?
  4. A

    Forget the name of it, but i need a review

    yeah, ok I did that and i got (2x^2-x-1)/(x2-2x+1) + (x+1)/ (x^2 -2x-2) now what
  5. A

    Forget the name of it, but i need a review

    by Question mark i mean it would equal like 2x + 1 / x^2 - 1 or something along those lines
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    Forget the name of it, but i need a review

    Homework Statement I basiclly just need a little review and maybe some 1 to show me how to solve out the equation/and equation like it. here is an example: 2x+1 / x-1 + 1/ x+1 = ? Homework Equations ? The Attempt at a Solution ?
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    Electric Field help

    Heres my calculations, and i did make it .247 before. 9x10^9 * 43.1 x10-9/.247^2 + 9x10^9 * 61.7 x10^-9/.247^2 is that correct? comes out to be 6.4 x10^3 + 9.1 x 10^3 = 15500? Then what? Do i divide by two?
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    Electric Field help

    oh, ok i forgot about the mass of a proton, thanks, but im still stuck in the first question. i dont know if i did the math wrong but im not getting it right
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    Electric Field help

    Homework Statement Alright i have two problems i need help with 1st. Find the electric field at a point midway between two charges of +43.1 10^-9 C and +61.7 10^-9 C separated by a distance of 24.7 cm. ________ N/C 2nd. A Van de Graaff generator is charged so that the...
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    Need phyeics help (electric charge/Forces)

    the problem is i get the first part of the question, i do 29 * 9.48e21 then multiply it by 1.08 and get my answer 2.962e23 then how do i find the total charge? do i multiply that by -1.6e-19?
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    Need phyeics help (electric charge/Forces)

    ight well i actully figured out the last two. but i still can seem to get the 1st one. iv tried all that i can think of can some one help me with that please?
  12. A

    Need phyeics help (electric charge/Forces)

    Homework Statement K i need help with like 3 phyics problem on electric forces / charges. 1. One gram of copper has 9.48 10^21 atoms, and each copper atom has 29 electrons. (a) How many electrons are contained in 1.08 g of copper? _________ electrons b. What is the total charge of...
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    Mechanical/potential Engergy work / speed help

    Alright I need a little help. It's finding the speed of something using mechanical energy, work or power. The question is Tarzan swings on a 28.4 m long vine initially inclined at an angle of 37° from the vertical. (a) What is his speed at the bottom of the swing if he starts from rest...
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    Help with conservation of Mechanical Energy

    Alright I have a few problems here. 1). A bird is flying with a speed of 18 m/s over water when it accidentally drops a 2 kg fish. If the altitude of the bird is 5.40 meters and friction is disregarded, what is the speed of the fish when it hits the water? My work: I don't know if I did this...
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    Pre-cal help with probles like e^x, ln logs etc.

    In calc we are having like this flash card quiz and you have to apply things to the graph of like e^x or lnx. I was wondering how do you determine the domain range of graphs like these. for example e^x graph domain is all reals, and the range is 0 to infinity. How would you transform this...
  16. A

    Ok I just need help understanding a little pre-cal

    In calc we are having like this flash card quiz and you have to apply things to the graph of like e^x or lnx. I was wondering how do you determine the domain range of graphs like these. for example e^x graph domain is all reals, and the range is 0 to infinity. How would you transform this...
  17. A

    Physics, Work/friction help.

    Really? Nice. If so thank you. If anyone finds an error please let me know. thank you :)
  18. A

    Physics, Work/friction help.

    Homework Statement Alright well the problem is that 10 kg frozen turkey is thrown and goes horizontally on a surface with a 0.10 coefficient of kinetic friction. It travels for 10 meters. What is the work the friction does to stop the object. And what is the speed the frozen turkey is thrown...
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    Question About Friction

    yeah thats what I was basiclly asking. Just wondering in that situation Kineitc friction would be less than the staic friction correct? And the more weight or force down on the object to bigger the value in friction correct?
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    Question About Friction

    Alright, we recently had a lab in class, but our teacher is gone so we didn't do part of it. Anyways, It was about friction and I just have a general question. Let's say we have a brick sliding on a piece of paper with a constant velocity, and acceleration and net force = 0. I was just...
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    Help with Forces (N)

    Is there any like websites that have pretty good diagrams and explanations of how to go about Force problems. Problems containing Net forces, Friction, etc. I am just really lost because our physics teacher (who already is a bad teacher) left for 2 weeks since he had a baby right when we were...
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    Physics (Net Forces/Newton's laws)

    Alright well I have 2 questions im stuck on. first is: Four forces act on a hot-air balloon, shown from the side in the figure below. Find the magnitude and direction of the resultant force on the balloon if F1 = 4600 N, F2 = 1250 N, F3 = 1000 N, and F4 = 4200 N. F1 is pointing up, F4...
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    Need help with projectiles launched at an angle

    I never asked anyone to do it. if they did it would help but those were just examples. I basiclly just need help on how to like go through a problem like that. Like I said I can do horizantal projectals, but we just started angled launches and our teacher didnt even teach us the section because...
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    Need help with projectiles launched at an angle

    Alright, I get how to get projectiles launched horizontally, but today our teacher wasn't even there and for some reason without going over the lesson he assigned us homework... so here I am. I just need to basicly know how to do this. I have 3 example problems from my homework. if you can do...
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    Help with Long division of functions

    Can anyone explain the correct way to do that type of long division with functions? If you don't get what i mean an example would be like x4+3x2+1 / x2-2x+3
  26. A

    Velocity/Acceleration/displacement Help

    yeah thats what i meant, i got the first part i needed help with how far/distance it traveld after it accelerated. but yeah i get it now thanks
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    Velocity/Acceleration/displacement Help

    Ah I see. then does accelaration even matter? Can't you just do Change in velocity Times change in time?
  28. A

    Velocity/Acceleration/displacement Help

    Homework Statement I need help with acceleration/displacment, mainly how far something moves during a acceleratopn period Homework Equations Alright, right now i am learning about velocity and acceletarion and i have a question/problem i need help with. I know the formula for...
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