Physics

A piece of wood of uniform cylindrical cross section floats upright in a liquid of relative density 0.80 with 1/6 of its height above the liquid. If placed in water, what is the fraction of its height above the water level?

  1. 👍 0
  2. 👎 0
  3. 👁 134
  1. volume of wood = V
    density of wood = rhowood
    density of liquid = .8 * rho water = 800 kg/m^3
    density of water = 1000 kg/m^3

    in liquid
    rhowood * g * V = (5/6) * 800 *g * V
    so
    rhowood = 5 *800 / 6 = 2000/3 = 2/3 * density of water
    so 1/3 of the wood is out of water

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A hypodermic needle consists of a plunger of circular cross-section that slides inside a hollow cylindrical syringe. When the plunger is pushed, the contents of the syringe are forced through a hollow needle (also of circular

  2. physics

    A cylindrical conductor of length L and uniform area of cross section A has resistance R. What will be the area of cross section of another conductor of length 2L and resistance R of the same material?

  3. SPR,PHYSICS

    A block of wood floats in water with two-Third of its volume submerged its relative density is equal to?

  4. Chemistry

    1. A piece of rectangular wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? 2. I threw a plastic ball in the pool for my dog to fetch.

  1. science

    A rectangular block of wood floats in water with two-third of it's volume immersed .when placed placed in another liquid ,it floats with half of it's volume immersed .calculate the relative density of a liduid.

  2. Physics

    1. A cylindrical disk of wood weighing 45.0N and having a diameter of 30.0 cm floats on a cylinder of oil of density 0.850 g/cm3. The cylinder of oil is 75.0 cm deep and has the same diameter of the wood. (a) What is the gauge

  3. physics

    a piece of wood of volume 200cm3 and density of 1.05gm/cm3. what volume of wood would remain above the surface of the liquid

  4. PHYSICS

    A piece of wood is floating at the surface of some water as illustrated (the diagram is not to scale). The wood has a circular cross section and a height h = 4.0 cm. The density of water is 1.00 g/cm3. The distance y from the

  1. math

    A cylindrical piece of wood of radius 4.2 cm and length 150 cm is cut length rise into two equal pieces. Calculate the surface area of one piece

  2. Physics

    A block of wood with volume V floats in water with 0.68V submerged. In oil the block floats with 0.86V of its volume submerged. What's the density of the wood?

  3. Geometry

    A cylinder is sliced such that the cross section is perpendicular to its bases. What is the shape of the cross section? A: trapezoid (I think it's this one) B: triangle C: Circle D: Rectangle

  4. Physics

    A liquid (density = 1.65 g/cm^3) flows through two horizontal sections of tubing. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 275 cm/s, and the pressure is 1.20 x 10^5 Pa. This tubing then rises

You can view more similar questions or ask a new question.