What is the density, in kilograms per cubic meter, of a woman who floats in freshwater with 4.00% of her volume above the surface?
this could be measured by placing her in a tank with marks on the side to measure how much water she displaces when floating and when held under water (briefly).
what percent of her volume is above the surface when she floats in seawater?

a)

b) %v=6.34

Explanation:

To this problem important information you can get in textbooks or internet is the density of freshwater and seawater

Freshwater

Seawater

Now using the equation of fraction submerged that compared the density of both elements the woman and the freshwater

a).

Solve to density of the woman

Now the percent in sea water is:

%v= 6.34

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

so easy. just google the electromagnetic waves and it’ll pop up.