Most popular questions and responses by Chao
  1. Physic

    In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level desk. By doing this at the right speed, he can get the penny to accelerate vertically, into the airstream, and then deflect it

    asked on May 7, 2011
  1. College Chemistry

    the coefficients provide a direct link

    posted on November 2, 2014