Recent content by Electrophy6

Ohhh you are right Thank you very much for your patience and for your help!

Maybe ... in the eqaution of vx should I use Vx -----------------vx-------------------Vy -----------------vz------------------Vz ?

Sorry , I misunderstood the question However ,I will try answering it: I guess these equations are true If S' goes to the right relative to S (So ,does it mean ,they can't fit the directions I just presentd ?)

Oh sorry again ,wrong diagram S' goes in the y positive direction(upwards) relative to S

let's say we define the "right" to be the x positive direction and assume rocket A (O') moves in this direction realtive to O (originally S ,S' but it doesn't matter)

Ok ,let's use the following notations Earth- S Rocket A- S' Rocket B- S''(not necessary)

Oh sorry ,forgot the th most important part The question is : "What is the velocity of Rocket B , relative to Earth ?"

Homework Statement Rocket "A" velocity is 0.8c to the right ,reltaive to earth Rocket "B" velocity is 0.6c to the left , relative to rocket "A" (This one I succedeed) My problem was in this question: Repeat the same problem ,but bow rocket "A" moves 0.8c * upwards *(positive y axis) For some...

Hey all, I am looking for **calculus**(and not all these books of Advanced Engineerigng Math or etc...) books dealing with Fourier Series ,its expansions , half reange extensions etc... I have found that "Stewart'c calculus" includes a chapter dealing generally with Fourier Series but *not *...

yes you are totally right , but take a look at the solution my lecturer uploaded - why didn't he just use that method ?

Oh sorry Pasmith, first of all thank you for your reply! I have never seen this formula before...it makes sense of course However, I need another way to solve it (as I mentioned, I guess I can't use it ,since I wasn't taught that...) BTW:what is the source of this formua ,is it taken from a...

So again , is there any alternative way to solve this ?

The complete solution is attached in this picture below...(without that ,you will not be able to understand the answer) I do understnad the way it was solved yet , I still wanted to solve it by my own in the ways presented above...

Yes it is(that's what I did) , yet ,the answer key tells me the normal vector is different from (-1,0,1)...

Homework Statement [/B] Show that the given parametric curve decribed by the following notations: x=cos(t), y=sin(t), z=2+2cos(t) lies in a single plane ,find the normal vector to this plane Homework Equations --- [/B] r(t)=cos(t) i + sin(t) j + 2+2cos(t) k The Attempt at a Solution My...