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Question 8 solution

avers of gasoline are mixed with 50 cm3 a. How much force do on the flat end of ea b. Suppose the upper sturdy ceiling. Ho players would nee cylinder to pull th wat is the average density of the mixture?or water. What lhas been added to 400 mL of water in a con- a mass of 350 g when empty. The resulting con- id mixture has a mass of 733 g. What volume of 6 Ethyl alcohol been tainer and liquid co hol was added to the water? ale average density of the body of a fish is 1080 kg/m3. To keep inking, the fish increases its volume by inflating an internal Section 13.3 Measuring 16, what is the gas pr bladder, known as a swim bladder, with air. By what percent the fish increase its volume to be neutrally buoyant in fresh must uater? Use the Table 13.1 value for the density of air at 20°C. Pgas Section 13.2 Pressure The ocean floor is, on average, 4267 m below sea level. What Mer is the pressure in atmospheres at this depth? 16 cm 9. 1 A tall cylinder contains 25 cm of water. Oil is carefully poured into the cylinder, where it floats on top of the water, until the total liquid depth is 40 cm. What is the gauge pressure at the bottom of the cylinder? FIGURE P13.1 IO. I A 1.0-m-diameter vat of liquid is 2.0 m deep. The pressure at the bottom of the vat is 1.3 atm. What is the mass of the liquid in the vat? 17. I The conta open to thea A 35-cm-tall, 5.0-cm-diameter cylindrical beaker is filled to urd force of the water on . a. What is

Answer 1

Pressure at depth 'h' is given by:

P = Patm + rho*g*h

Patm = atmospheric pressure = 1 atm = 1.01325*10^5 Pa

rho = density of sea water = 1030 kg/m^3

g = 9.81 m/sec^2

h = depth = 4267 m

So,

P = 1.01325*10^5 + 1030*9.81*4267

P = 4.32*10^7 Pa = (4.32*10^7 Pa)/(1 atm/1.01325*10^5 Pa)

P = 426.35 atm

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