anonymous
  • anonymous
vectors
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1377852050301:dw|
dan815
  • dan815
|dw:1377852107630:dw|
zzr0ck3r
  • zzr0ck3r
the Dz is throwing me off, we would only be moving in 2d (on a plane)

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zzr0ck3r
  • zzr0ck3r
and there are 2 people? A and B?
anonymous
  • anonymous
yeah i don't know why but there are A and B
dan815
  • dan815
|dw:1377852160749:dw|
dan815
  • dan815
then they both have the same dx and dy
zzr0ck3r
  • zzr0ck3r
Dx = 500sqrt(3)/2 Dy = 250 Dz = 0
anonymous
  • anonymous
and yes it is 2d...it says "hint:draw set of xy axis sketch A and B's displacement D on your axes, assuming that they are in standard orientation"
dan815
  • dan815
|dw:1377852280693:dw|
dan815
  • dan815
can you copy paste your question it doesnt make sense.. unless they are area coupole holding hands
dan815
  • dan815
are you sure one of them isnt going somewhere else
anonymous
  • anonymous
yeah they are walking exactly together
dan815
  • dan815
okay then you are done
dan815
  • dan815
GIVE ME MEDAL
anonymous
  • anonymous
what is magnitude of D
dan815
  • dan815
STOP being stingy
dan815
  • dan815
:)
dan815
  • dan815
u already have magnitude of Dx and Dy what u want then
dan815
  • dan815
magnitude means length
anonymous
  • anonymous
of displacement D
dan815
  • dan815
|dw:1377852550296:dw|
anonymous
  • anonymous
oh so components is 500 cos 30 and magnitude is 250 sqrt(3) correct me if i am wrong
dan815
  • dan815
>_>
dan815
  • dan815
500 cos 30 = 250 sqrt3
anonymous
  • anonymous
yeah right but what is difference between component and magnitude
dan815
  • dan815
component means a part of something
dan815
  • dan815
magnitude = length of something
dan815
  • dan815
what component do you want
anonymous
  • anonymous
component of dx, dy and dz
dan815
  • dan815
Dx is a component of D
dan815
  • dan815
and Dx has a magnitude of 250sqrt3
dan815
  • dan815
Dx has a direction in only in the x direction or in the i unit vector
dan815
  • dan815
Dx=<250 sqrt3,0> Dy= D=<250sqrt3,250>
dan815
  • dan815
D=<250sqrt3,-250>
dan815
  • dan815
|dw:1377852912732:dw|
dan815
  • dan815
make sense this is their vector notation
zzr0ck3r
  • zzr0ck3r
I stlil think we have a 3rd component, because we are in 3-space
anonymous
  • anonymous
lets say they both run instead of walking, what are the components of displacement now
dan815
  • dan815
|dw:1377853069435:dw|
dan815
  • dan815
same
anonymous
  • anonymous
oh so the third would be <250sqrt(3),250,0> i guess
zzr0ck3r
  • zzr0ck3r
but we dont do anything in that direction so \[<250\sqrt{3},250,0>\]
dan815
  • dan815
a vector will not account for the speed, it takes to travel
dan815
  • dan815
yah u got it
dan815
  • dan815
when you imagine stuff, do you see a dark place
dan815
  • dan815
or do you see a brightly lit place
anonymous
  • anonymous
alright i got it. component of lets say Dx is 500 cos (30) and magnitude of D is <250sqrt(3), 250, 0> right?
anonymous
  • anonymous
no lol why would you ask that
dan815
  • dan815
because i just realized when i try to imagine vectors, i was trying to draw lines in a dark place.. and it wasnt visible
zzr0ck3r
  • zzr0ck3r
I look at the corner of a room, on the floor, that is the origin.
dan815
  • dan815
lol
dan815
  • dan815
what will you do when u go blind
anonymous
  • anonymous
my question ^
zzr0ck3r
  • zzr0ck3r
x is left, y is right , z is up the room you are in is the first quad where x,y,z >0
zzr0ck3r
  • zzr0ck3r
I would not have passed 3d calculus without that tool ...lol
dan815
  • dan815
|dw:1377853412219:dw|
zzr0ck3r
  • zzr0ck3r
yep, corner of a room^^^^
dan815
  • dan815
then you can rorate that axis around and get all funky
anonymous
  • anonymous
alright i got it. component of lets say Dx is 500 cos (30) and magnitude of D is <250sqrt(3), 250, 0> right?
zzr0ck3r
  • zzr0ck3r
|dw:1377853472591:dw|
dan815
  • dan815
lol
zzr0ck3r
  • zzr0ck3r
lol
dan815
  • dan815
zzrpockers 3d space has some holes built into it
anonymous
  • anonymous
and squares too lol
dan815
  • dan815
do you look at the picture frame for your 2d view
zzr0ck3r
  • zzr0ck3r
it has a door and a window in it. I imagine those are the other spacial dimensions we hear about
anonymous
  • anonymous
but still good idea imagine a 3d as room
zzr0ck3r
  • zzr0ck3r
nah 2d is just paper
zzr0ck3r
  • zzr0ck3r
so my door knob is <0,4,5>
dan815
  • dan815
|dw:1377853594591:dw|
zzr0ck3r
  • zzr0ck3r
<0,5,4>
zzr0ck3r
  • zzr0ck3r
lol
dan815
  • dan815
|dw:1377853661476:dw|
dan815
  • dan815
are you over there
zzr0ck3r
  • zzr0ck3r
|dw:1377853695653:dw|
zzr0ck3r
  • zzr0ck3r
ok we should move on...lol
dan815
  • dan815
|dw:1377853802548:dw|
dan815
  • dan815
then*
zzr0ck3r
  • zzr0ck3r
@Best_Mathematician let me know when you want to talk about vector equations of a line, I just tutored someone on that a few days ago, so its fresh...
dan815
  • dan815
and u should probably go to a psycologist
zzr0ck3r
  • zzr0ck3r
lol @dan815
anonymous
  • anonymous
|dw:1377853884596:dw| my room with 29 dimesions ;p my question is till there @zzr0ck3r you guys didn't notice it
zzr0ck3r
  • zzr0ck3r
lol
zzr0ck3r
  • zzr0ck3r
nice work
anonymous
  • anonymous
component of Dx is 500 cos (30) and magnitude of D is <250sqrt(3), 250, 0> right?
zzr0ck3r
  • zzr0ck3r
um one of the components of D is Dx = 250sqrt(3) another component is Dy Dx has no "components" magnitude of d is \[\sqrt{(250\sqrt(3)^2+25^2)}\]
anonymous
  • anonymous
magnitude of displacement D is 500
zzr0ck3r
  • zzr0ck3r
\[\sqrt{(250\sqrt{3})^2+250^2}\]*
zzr0ck3r
  • zzr0ck3r
=\[\sqrt{3*250^2+250^2}=\sqrt{4*250^2}=2*250=500\]
zzr0ck3r
  • zzr0ck3r
correct
anonymous
  • anonymous
i got it...thanks...i got no more medals sorry
zzr0ck3r
  • zzr0ck3r
lol I couldnt care less about medals
zzr0ck3r
  • zzr0ck3r
if I did I would not stay here for an hour :)
anonymous
  • anonymous
correct...you guys helped me recall a lot of stuff back.. thanks.last part i am posting is Funny vectors...lets see there

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