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Pressure
Test Description: First Test
Instructions: Answer all questions to get your test result.
1) What is the absolute pressure experienced at a point on the bottom of a swimming pool 9 meters in depth?
A
1882 Pa
B
188200 Pa
C
500 Pa
D
1000 Pa
2) 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
none of the above
B
666.66 N
C
66.66 N
D
.666 N
3) What is the absolute pressure in a depth of 100 meters of ocean water?
A
1.08 x 10 ^ -6
B
1.08 x 10^6
C
1.08 x 10^5
D
none of the above
4) 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
216400
B
none of the above
C
541000
D
21640
5) what is the unit for pressure?
A
Pascal
B
barr, torr, mercury
C
atmospheric
D
all of the above
6) what is pressure?
A
the magnitude of the force on a surface per unit volume
B
the magnitude of the force on a surface per unit perimeter
C
the magnitude of the force on a surface per unit area
D
the magnitude of the force on a surface per unit time
7) Which one has the highest pressure?
A
large area
B
small area
C
medium rare area
D
medium area
8) what is pascal's principle?
A
Any externally applied pressure is transmitted to all parts of the enclosed fluid
B
Any externally applied pressure is sometimes transmitted to all parts of the enclosed fluid
C
Any externally applied pressure is transmitted to all parts of an open fluid
D
Any externally applied pressure is not transmitted to all parts of the enclosed fluid
9) 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
50
B
5
C
10
D
100
10) 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
200
B
400
C
100
D
300
*select an answer for all questions
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