Recent content by ken62310

  1. K

    Conservative vector field or not?

    for R3 you need to check all x: d/dy , d/dz y: d/dx, d/dz z: d/dx, d/dy
  2. K

    What is the maximum magnitude of the transverse speed of the string?

    Homework Statement The wave function for a traveling wave on a taut string is (in SI units) the following equation. y(x, t) = (0.12 m)sin(6πt - 3πx + π/4) What is the maximum magnitude of the transverse speed of the string. I don't quite understand the question. Does it mean the speed...
  3. K

    What kind of job can i get with

    A bachelor's degree in computer engineering? i just wonder .. is it easy to survive in America with that degree...?
  4. K

    A simple momentum question.

    so all the angle stuff are useless in this case??
  5. K

    A simple momentum question.

    oh...so for x: mv1 cos 37 and for y: mv1 cos 53 ? am i right?
  6. K

    A simple momentum question.

    for x: mv1=mv2 cos67+ mv3 cos theta. for y: mv1=mv2 sin30+ mv3(37-theta). ... please tell me if i am correct..
  7. K

    A simple momentum question.

    so that means i need to find the angle that formed by the 4i+3j right? now i have another question. I found that the angle of the 4i+3j would be 37 degree. and for x i will add that to the 30 degree right. then what about for the y? do i need to add the different angle? should it be respect to...
  8. K

    A simple momentum question.

    i am not quite understand what you mean. how do i add the two angles? could you be more detailed?
  9. K

    A simple momentum question.

    PHYSIC momentum QUESTION~ Homework Statement A billiard ball moving with velocity 4i+3j m/s strikes a stationary ball of the same mass. After the collision the struck ball moves with a speed of 4m/s at an angle of 30 degree with respect to the line of original motion of the striking ball...
  10. K

    How do I get a formula that finds the initial velocity with height in it?

    How do I get a formula that finds the initial velocity with height in it?? How do I get a formula that finds the initial velocity with height in it?? i was doing a inclined plane problem with is deal with 2 steel balls' collision~ could somebody help me to derivate that formula?
  11. K

    A simple mechanic problem

    can anyone help me on the second question? i found the part a is 1400 * 0.1 m = 140N, part b is 6.6m, part c is 14J, part d is but i don't know how to do the last two part.... help please!! is this correct? w=mgcos60 x 6.6m = 6.468 J.. i don't know which distance should i use~ 0.1m or 6.6m...
  12. K

    How to solve this question?

    A projectile is launched from the edge of a 100m high vertical cliff at an angle of 30 degree below the horizontal. The projectile hits the ground at a distance of 50m from the bottom of the cliff. -Find the initial and final velocities of the projectile(magnitudes and directions). -Find total...
  13. K

    A general physic q please help

    a general physic q please help!! A bob rotates clockwise in a vertical circle at the end of a 1 m long rope. In the pint, where the rope makes the horizontal to the right, the acceleration of the bob is (-2i+3j)m/s^2. At that instant -sketch the acceleration vector and find its magnitude...
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