# Pressure: Question Preview (ID: 29390)

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**What is the absolute pressure experienced at a point on the bottom of a swimming pool 9 meters in depth?**

a) 1000 Pa

b) 188200 Pa

c) 500 Pa

d) 1882 Pa

**A hydraulic lift is used to lift a heavy machine that is pushing down on a 3.0 m2 piston (A1) with a force (F1) of 4,000 N. What force (F2) need to be exerted on a .050 m2 piston (A2) to lift the machine?**

a) 666.66 N

b) 66.66 N

c) .666 N

d) none of the above

**What is the absolute pressure in a depth of 100 meters of ocean water?**

a) 1.08 x 10 ^ -6

b) 1.08 x 10^5

c) 1.08 x 10^6

d) none of the above

**The interior of a submarine located at a depth of 45 meters is maintained at normal atmospheric conditions. Find the total force exerted on a .20 m by .20 m square window. ( Hint: find absolute pressure then force ☺)**

a) 21640

b) 541000

c) 216400

d) none of the above

**what is the unit for pressure?**

a) Pascal

b) atmospheric

c) barr, torr, mercury

d) all of the above

**what is pressure?**

a) the magnitude of the force on a surface per unit perimeter

b) the magnitude of the force on a surface per unit area

c) the magnitude of the force on a surface per unit volume

d) the magnitude of the force on a surface per unit time

**Which one has the highest pressure?**

a) large area

b) medium area

c) medium rare area

d) small area

**what is pascal's principle?**

a) Any externally applied pressure is not transmitted to all parts of the enclosed fluid

b) Any externally applied pressure is transmitted to all parts of the enclosed fluid

c) Any externally applied pressure is sometimes transmitted to all parts of the enclosed fluid

d) Any externally applied pressure is transmitted to all parts of an open fluid

**You can exert 50 N of force on a piston with an area of 1.0 m2. If you are trying to lift a machine that weights 500 N, what must be the area of the piston on which the machine rests?**

a) 100

b) 10

c) 50

d) 5

**You decide to drive your vehicle, which has a weight of 100 N onto a piston that is 5.0m2, what weight machine can you lift if the piston on which it rests is 20 m2?**

a) 100

b) 200

c) 300

d) 400

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