All people come very close to being able to float in water. What therefore is the volume (in cubic meters) of a 50-kg woman?
a. 0.007
b. 0.035
c. 0.050
d. 0.070
e. 0.085
Question 2
Melanie says that when a diver enters an underwater cave of height h, the pressure on her is no greater than rWgh. Rosalind says that if the bottom of the cave is a distance H below the water surface, the pressure on the soles of the diver's feet can reach rWgH. Which one, if either, is correct? (The density of water is rW.)
a. Melanie, because the roof of the cave absorbs the water pressure from above. b. Melanie, because only the fluid directly above any volume of the fluid can contribute to the pressure on that volume. c. Rosalind, because a fluid exerts equal pressure in all directions at a given depth.
d. Rosalind, because the pressure also depends on the density, rc, of the material above the cave roof, so that p = rcg(H - h) + rWgh.
e. Melanie, because the pressure equals p = rWgH - rcg(H - h).
Fossils are formed after an animal dies, decomposes, and is covered in sediment. Minerals in ground
Zhang Huan, To Raise the Water Level in a Fishpond.
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An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i
Water strider (Gerris remigis) on water surface, showing surface tension.