Most popular questions and responses by Hardy
  1. SAT Math

    A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?

    asked on June 3, 2010
  2. Physics

    The system shown in the figure is in equilibrium. A 15 kg mass is on the table. A string attached to the knot and the ceiling makes an angle of 54◦ with the horizontal. The coefficient of the static friction between the 15 kg mass and the surface on

    asked on November 1, 2012
  3. Math

    how would i make r the subject of the formulae: w=ar/R-r

    asked on May 31, 2010
  4. Math

    If f(x) = │(x² – 50)│, what is the value of f(-5) ?

    asked on June 3, 2010
  1. physic


    posted on March 3, 2015
  2. Math

    would someone please solve this

    posted on June 3, 2010