A log of wood is floating in water with 40% of its volume above the surface of the water. if the volume of the log is 0.4 m^3, find the mass of the log.

a. 200kg
b. 240 kg
c. 160 kg
d. 16 kg

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The mass of the block equals the mass of the displaced water. The volume of ...

1. A mass is hung on a scale and while hanging the mass is submerged in water. The scale read .45 kg when submerged. When the mass is submerged the waterdisplaced is 100 cm^3. What is the magnitude of the mass?
2. A car with windows closed floats in water when 50% submerged. If 1 m^3 of water seeps into the car it becomes to

50 kg person is immersed in a water tank for body fat testing, she has an underwatermass of 2kg. This difference in body mass is equal to the mass of waterdisplaced by the body. The density of water 1.00g/ml.
a) what is the volume of the waterdisplaced?
b) what is the volume in liter, of the person's body?
c) what is the

A certain object weighs 100 N. When placed in water it weighs 72 N and when placed in oil it weighs 82 N.
a) What is the density of the object?
b) What is the density of the oil?

Part A: A raft floats and displaces 4.5 m^3 of water. The volume of the raft id 8 m^3 and its area is 10 m^2. When the tide is low the raft is attached to an anchor. As the tide comes in the water level rises .25 m but the raft is constrained and rise. What is the tension on the anchor?
Part B: If the raft is taken to the Dea

A hollow spherical iron shell floats almost completely submerged in water. The outer diameter is 54.0 cm, and the density of iron is 7.87 g/cm3. Find the inner diameter.
I have no clue how to start or solve this problem. Thanks for the help!

A beaker contains a thick layer of oil floating on water. A cubical block of wood is gently lowered into the beaker, so as not to disturb the layers of liquid, until it floats peacefully between the layers, as shown.
a) What is the distance between the top of the wood cube (after it has come to rest) and the interface between

Determine the equilibrium position of a cylinder of radius 3 inches, height 20 inches, and weight 5pi lb that is floating with its axis vertical in a deep pool of water of weight density 62.5 lb/ft^2.
keywords: buoyant force

1. A copper penny has a mass of 2.7 g. What is the buoyant force acting on this penny when dropped into water? (The answer should be 3.0 mN)
2. An iceberg (917 kg/m^3) is floating in the ocean (1,025 kg/m^3). What percentage of the total volume of the iceberg is below the surface of the water? (The answer should be 89.5%)

Please help with the given problem:
** Please see the attached file for the figure depicting the described problem **
You must compute the ratio of the actual weight of the crown (W_actual) and the apparent weight of the crown when it is submerged in water (W_apparent). See whether you can follow in Archimedes' footsteps. Th