Recent content by emg333

  1. E

    Calculating the Density of a Floating Block of Wood

    I think you use Archimedies ' principle for this= the buoyant force on an immersed object has the same magnitude as the weight of the fluid displaced by the object.
  2. E

    Refraction and Mirrors, image position

    Homework Statement A concave mirror (R=54cm) faces a convex mirror of the same radius. The distance between the mirrors is 54cm, and their axes coincide. A candle is held between the mirrors, 10 cm from the convex mirror. Consider light rays reflect off the concave mirror and then the...
  3. E

    Thermodynamics- carnot engine power

    Homework Statement An ice making plant consists of a reversed Carnot engine extracting heat from a well- insulated box. The temperature in the icebox is -5C and the temperature of ambient air is 30C. Water of an initial temp 30C is placed in the icebox and allowed to freeze and cool to -5C...