1. Calculate the gauge pressure -in excess of atmospheric- at a depth of 10.5 meters, in the Dead Sea. The density of dead sea water PDead sea =(1238 kg/m^3)

2. An alligator changes its density by adjusting its mass. Alligators took a physics course and learned about buoyancy and density. Assuming an alligator swallows stones with a mass 2.2 kg how much deeper, in millimeters, would it sink? Assume the alligator is initially floating and 30% of its body is above water and its body's surface area A=1.2m2; Use g=9.8ms2, water=1,000kgm3 3. What fraction (not percentage) of the atmospheric pressure would a rectangular block submerged in the Dead sea experience ? Hint: Calculate pgauge. The block is 14.3 m below the surface. Use patmospheric=101,300Pa Dead Sea=(1238kgm3)

4. Calculate the force exerted upon the face/side of Pascal's barrel. A narrow straw, height 21 m is placed in a hole drilled on the top side of the barrel. The barrel has a radius R=36cm and a height hbarrel=0.8m. The straw is filled with almond oil. oil=0.91gcm3 Hint: Calculate the average pressure on the side of the barrel. p=FAF=pA

5. Calculate the difference in the height ofHgon one side of anUtube and the height ofHgin the other side ifHgand oil are placed in anUshaped tube. Known: the column of oil on top of mercury is 15cmheigh. Hg=13.6gcm3 oil=0.91gcm3 pHg, 1 at height h=pHg, 2 at depth h

6. An example of fluid flowing during a change in pressure is Choose all that apply

Group of answer choices

a)sipping a drink through a straw.

b)breathing.

c)opening a carbonated beverage.

7.An object sinks when it displaces a volume of liquid that has a weight

Group of answer choices

a)less than the objects weight.

b)equal to the objects weight.

c)more than the objects weighs.

d)None of the above.