CATAGORY: Other
QUESTION: 18. Find the displacement in cubic meters of a boat weighing
4450N.

22. A fishing line has attached to it a hollow plastic float 2.50 cm in
diameter and having a mass of 2.00g. Find the mass of the lead weight
that, when attached to the bottom of the float, will cause the float to be
half submerged.

23. A man weighing 675 N is floating in water with 2% of his body's volume
above the surface of the water. Find the volume of the mans body.

24. A 133lb woman in a swimming pool expels air from her lungs and then
has a density just barely greater than that of water. If she makes no
effort to swim or tread water, she will slowly sink to the bottom of the
pool. by taking a deep breath of air she is able to float with her nose
above the water.  What volume of air must be inhaled if 3% of her bodies
volume is above the surface of the water?

25. If a man is capable of lifting a 100lb stone on land, how heavy a
stone could he lift under water?  the specific gravity of the stone is
2.50.

26. A cylindrical buoy having a diameter of .700m floats in sea water with
its top .700m above the surface of the water.  Find the distance that the
buoy sinks when a person weighing 625N stands on it.

28. Hydrotherapy is a medical technique used to allow patients to exercise
weakened limbs.  the limb is submerged in water so that its apparent
weight is reduced.  Find the apparent weight of an arm of weight 50.0N and
volume 3.50E3cm^3 when it is under water.

29. A solid piece of iron will obviously not float in water. It will,
however, float in mercury. Find the fraction of the iron submerged in the
mercury.

30. A life perserver made of styrofoam is designed to support a person
weighing 575N, with 80% of the body and 90% of the preserver submergedd.
find the volume of styrofoam required if the body's volume is .0500m^3. 

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ANSWER NOT YET COMPLETED.