Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

yajjnobee

vector A has components Ax=1.30cm, Ay= 2.25cm; vector B has components Bx=4.10cm, By=-3.75cm. Find a. the components of the vector sum A+B; b. the magnitude and direction of vector A+B; c. the components of the vector difference B-A; d. the magnitude and direction of Vector B - A.

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    A=<1.3,2.25> B=<4.1,-3.75> just add component by component A+B=<1.3+4.1,2.25-3.75> <5.4,-1.5> For magnitude \[\sqrt{(5.4)^2+(1.5)^2}\] for direction \[tan^{-1}(-1.5/5.4)\]

    • 2 years ago
  2. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    whar? we have different answers

    • 2 years ago
  3. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    let me see what you do

    • 2 years ago
  4. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    the formula to get the vector is \[vector A= \sqrt{Ax ^{2}+ Ay^2}\] and \[Vector B= \sqrt{Vx^{2} + Vy^{2}\}

    • 2 years ago
  5. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    that will find you magnitude of vector A only

    • 2 years ago
  6. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    and vector b=\[\sqrt{Bx^2+ By^2}\]

    • 2 years ago
  7. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    oh ,you will add it afterward

    • 2 years ago
  8. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    just add it? so I came up with vector A=2.6 and vector B=5.56 so vector A + vector B = 2.6 + 5.56=8.16?

    • 2 years ago
  9. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    I think you are better off adding two vector component by component and then taking mag

    • 2 years ago
  10. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    I think that part is on how to get the magnitude. right?

    • 2 years ago
  11. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    magnitude of A+B

    • 2 years ago
  12. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah so the magnitude is \[\sqrt{(5.4)^2 + (-1.5)^2}\]?

    • 2 years ago
  13. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes

    • 2 years ago
  14. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    will I do the same thing on part c and d?

    • 2 years ago
  15. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    hey, ahmm, accordingly, when u get the magnitude, the formula for x-comp. is A cos \[\Theta\] right so we need to find the angle before we get the magnitude?

    • 2 years ago
  16. imranmeah91
    Best Response
    You've already chosen the best response.
    Medals 1

    oh , if you are given magnitude and direction , yes

    • 2 years ago
  17. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    i dunno what to do. what will be my answer on letter b. drivin me crazy.

    • 2 years ago
  18. yajjnobee
    Best Response
    You've already chosen the best response.
    Medals 0

    how can I get the value of x-component if the angle is not given. and it's impossible to compute the direction first because it needs the value for both x and y components

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.