Recent content by midge

  1. M

    Electric field from a line of charge

    Homework Statement Positive charge q= 7.81pC is spread uniformly along a thin nonconducting rod of length L=14.5cm. What are the magnitude and direction (relative to the direction of the x axis) of the E-field produce at pt P, at distance R = 6.00 cm from the rod along its perpendicular...
  2. M

    Finding the initial velocity of a projectile motion

    yes, thank you
  3. M

    Finding the initial velocity of a projectile motion

    Metallic, yea...it's whether I need to use 28 or another angle that I'm concerned about. And thank you regarding the m/s for velocity. I keep missing that =)
  4. M

    Finding the initial velocity of a projectile motion

    Liberator, The 7.5m is not given as the maximum height. It is how far above y=0 it landed. The problem does not state what the maximum height it, it just say that y=7.5 at the landing point. I am uncertain about the 28 degree angle as well. I don't quite understand what "28 degree below the...
  5. M

    Spring, Mass, Incline (Conservation of Mech-E)

    I calculated 1.89m/s. Just before the block stops and compresses the spring, all of its Emech is transferred to KE (since U=0 because of y=0) KE= .5mv^2 19.68 = .5(11)^2 v= 1.89 m/s
  6. M

    Finding the initial velocity of a projectile motion

    Homework Statement A baseball is hit at an angle theta. After a time, it lands 7.5m above the point at which it was hit, the land angle is 28 degree below the horizon. The final velocity is 36m/s2. Find the direction and magnitude of the initial velocity. Know: vf = 36m/s2...