physics

posted by .

A board that is 20 cm wide, 5 cm thick, and 3 m long has a density of 350 kg/m^3. The board is floating partially submerged in water do density 100 kg/m^3. What fraction of the volume of the board is floating above water?;

  • physics -

    Density of water = 1000kg/m^3.

    V = 3m * 0.20m * 0.05m = 0.03 m^3=Vol.
    of board.

    1 - (350/1000) = 0.65 = 13/20.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemisrty

    can anybody give me the density of arsenic oxide at STP is this the correct formula volume = mass/ density thanks Yes, but if you want the density, it is density = mass/volume. The number I have seen floating around on this board is …
  2. physics

    If 80% of a piece of wood is submerged in water before oil is added, find the fraction submjerged when oil with a density of 781 kg/m^3 covers the block. (Don't neglect the buoyant force of air before the oil is added). I thought to …
  3. Physics

    A bullet traveiling horizontally at aspeed of 350 m/s hits a board perpendicular to the surface, passes through it, and emerges on the side at a speed of 210m/s. if the board is 4.oo cm thick, how long does the bullet take to pass …
  4. physics

    a) what is the density of a log floating in salt water if 42% of its volume is exposed?
  5. Physics

    A wooden block floating in seawater has two thirds of its volume submerged. When the block is placed in mineral oil, 10% of its volume is submerged. ( a) Find the density of the wooden block. (The density of seawater is 1.024 g/cm3.) …
  6. Physics

    A plank of wood with a density of ρw = 650 kg/m3 and volume V = 0.65 m3 is floating in the ocean. (Assume the density of salt water is ρs = 1100 kg/m3) What is the volume of the block that is submerged?
  7. physics

    A wooden raft has 85% of its volume submerged when it is floating down a river with a density of water being 9.90x10^2 kg/m^3. What is the density of the wooden raft?
  8. physics

    A cubical block of density rB and with sides of length L floats in a liquid of greater density rL. (a) What fraction of the block’s volume is above the surface of the liquid?
  9. Physics , static fluids

    The density of ice is ρ(ice) = 920 kg/m3, and the average density of water is ρ(water) = 1.00 g/cm3. What fraction of the total volume of a block of ice is exposed when floating in water?
  10. Physics

    You decide to repeat Archimedes experiment and determine the density of a candle holder. you suspend it from a spring scale and scale reads 8.0N. You then lower the holder into a tub of water until completely submerged and it reads …

More Similar Questions