Question 1

Water is pumped through the hose shown below, from a lower level to an upper level. Compared to the water at point 1, the water at point 2:

Accepted Answer

A)  has greater speed and greater pressure 
B)  has greater speed and less pressure 
C)  has less speed and less pressure 
D)  has less speed and greater pressure 
E)  has greater speed and the same pressure 
A)  has greater speed and greater pressure 
B)  has greater speed and less pressure 
C)  has less speed and less pressure 
D)  has less speed and greater pressure 
E)  has greater speed and the same pressure

Question 2

In a stationary homogeneous liquid:

Accepted Answer

A)  pressure is the same at all points 
B)  pressure depends on the direction 
C)  pressure is independent of any atmospheric pressure on the upper surface of the liquid 
D)  pressure is the same at all points at the same level 
E)  none of the above 
A)  pressure is the same at all points 
B)  pressure depends on the direction 
C)  pressure is independent of any atmospheric pressure on the upper surface of the liquid 
D)  pressure is the same at all points at the same level 
E)  none of the above

Question 3

Water flows from a 6.0-cm diameter pipe into an 8.0-cm diameter pipe. The speed in the 6.0-cm pipe is 5.0 m/s. The speed in the 8-inch pipe is:

Accepted Answer

A)  2.8 m/s 
B)  3.7 m/s 
C)  6.6 m/s 
D)  8.8 m/s 
E)  9.9 m/s 
A)  2.8 m/s 
B)  3.7 m/s 
C)  6.6 m/s 
D)  8.8 m/s 
E)  9.9 m/s

Question 4

A lawn sprinkler is made of a 1.0 cm diameter garden hose with one end closed and 25 holes, each with a diameter of 0.050 cm, cut near the closed end. If water flows at 2.0 m/s in the hose, the speed of the water leaving a hole is:

Accepted Answer

A)  2.0 m/s 
B)  32 m/s 
C)  40 m/s 
D)  600 m/s 
E)  800 m/s 
A)  2.0 m/s 
B)  32 m/s 
C)  40 m/s 
D)  600 m/s 
E)  800 m/s

Question 5

The apparent weight of a steel sphere immersed in various liquids is measured using a spring scale. The greatest reading is obtained for that liquid:

Accepted Answer

A)  having the smallest density 
B)  having the largest density 
C)  subject to the greatest atmospheric pressure 
D)  having the greatest volume 
E)  in which the sphere was submerged deepest 
A)  having the smallest density 
B)  having the largest density 
C)  subject to the greatest atmospheric pressure 
D)  having the greatest volume 
E)  in which the sphere was submerged deepest

Exam 14: Fluids

Water is pumped through the hose shown below, from a lower level to an upper level. Compared to the water at point 1, the water at point 2:

In a stationary homogeneous liquid:

Water flows from a 6.0-cm diameter pipe into an 8.0-cm diameter pipe. The speed in the 6.0-cm pipe is 5.0 m/s. The speed in the 8-inch pipe is:

A lawn sprinkler is made of a 1.0 cm diameter garden hose with one end closed and 25 holes, each with a diameter of 0.050 cm, cut near the closed end. If water flows at 2.0 m/s in the hose, the speed of the water leaving a hole is:

The apparent weight of a steel sphere immersed in various liquids is measured using a spring scale. The greatest reading is obtained for that liquid:

Measurement

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