Recent content by redhawks

  1. R

    Is the Plastic Ball's Charge Positive or Negative in a Uniform Electric Field?

    Homework Statement A 2g plastic ball is suspended by a 2cm string in a uniform electric field of 1.0 x 10^4 N/C (the arrows point to the right) a) is the balls charge positive of negative? (B) If the ball is in equilibrium when the string makes a 15 degree angle with the vertical, what is...
  2. R

    Please help me with this physics problem on static friction

    Thanks, but i know to do the FBD. I think the distance part throws me off. If someone can go through the steps, it would really help me out.
  3. R

    Please help me with this physics problem on static friction

    I am pretty sure the answer might be A. Can someone help by showing the work needed to solve the problem. It would be greatly appreciated Homework Statement A crate is carried in a pickup truck traveling horizontally at 15.0 m/s. The truck applies the brakes for distance at 28.7 m while...