Popular questions and responses by gretch
  1. physics

    A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the top. Friction is absent. The spring constant of the spring is 4100 N/m. The piston has a negligible mass and a radius of 0.010 m. (a)

    asked on December 1, 2012
  2. algebra

    equivalent expression for 2log(x+1) - log(x^2 -1) +log(x-1)

    asked on July 5, 2012