# Recent content by austin1250

1. ### Forget the name of it, but i need a review

oh did i say that? Sorry x2-1
2. ### 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. ### 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. ### 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. ### Forget the name of it, but i need a review

no i forget, do you foil it ?
6. ### 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
7. ### 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 ?
8. ### 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?
9. ### 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
10. ### 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...
11. ### 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?
12. ### 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?
13. ### 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...
14. ### 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...
15. ### 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...