1. Blood flowing through an artery reaches a place where the artery is narrowed. The speed of the blood in the narrow section __________.

 

a. increases

b. decreases

c. remains the same

d. is unpredictable

 

Answer: _____

 

 

2. The radius of a pipe carrying water increases by a factor of two. As a result, the speed of the water in the pipe ___________________.

 

a. increases by a factor of two

b. decreases by a factor of two

c. increases by a factor of four

d. decreases by a factor of four

 

Answer: _____

 

 

3. Water flows through a horizontal tapered pipe. At the wide end its speed is 4.0 m/s and at the narrow end it is 5.0 m/s. The pressure in the wide pipe is 2.5 x 10⁵ Pa. What is the pressure in the narrow pipe?

 

a. 2.5 x 10² Pa

b. 3.4 x 10³ Pa

c. 4.5 x 10³ Pa

d. 2.3 x 10⁵ Pa

e. 8.0 x 10⁵ Pa

 

Answer: _____

 

 

4. What is the unit for rgh in Bernoulli’s equation?

 

a. kg/m³

b. N/m²

c. N/m

d. N m

 

Answer: _____

 

 

5. The speed of the air across the top of an airplane wing is 241 m/s when the speed of the air below the wing is 226 m/s. What is the lifting force if the area of the wing is 24.0 m²?

 

a. 1.92 x 10⁵ N

b. 4.52 x 10³ N

c. 8.40 x 10⁴ N

d. 1.09 x 10⁵ N

 

Answer: _____

 

 

6. A diameter of a stream of water from a faucet decreases as the distance from the faucet’s spout increases. This is a result of __________________.

 

a. Archimedes’ Principle

b. Pascal’s Principle

c. Bernoulli’s Law and the Equation of Continuity

d. Pascal’s Principle and Bernoulli’s Law

e. Pascal’s Principle and the Equation of Continuity

 

Answer: _____

 

 

7. Bernoulli’s Equation is based upon _____________________.

 

a. conservation of energy

b. conservation of momentum

c. the second law of motion

d. the third law of motion

 

Answer: _____

 

 

8. The equation of continuity is based on the conservation of ______________.

 

a. momentum

b. energy

c. mass

d. angular momentum

e. none of the above

 

Answer: _____

 

 

9. Water at a pressure of 3.5 x 10⁵ Pa is flowing at 5.0 m/s in a pipe which narrows to 1/3 its former area. What is the pressure and velocity of the water in the narrow section?

 

a. 2.5 x 10⁵ Pa, 15 m/s

b. 3.0 x 10⁵ Pa, 10 m/s

c. 3.0 x 10⁵ Pa, 15 m/s

d. 4.5 x 10⁵ Pa, 1.5 m/s

e. 5.5 x 10⁵ Pa, 1.5 m/s

 

Answer: _____

 

 

10. Where is the air pressure the greatest around the airplane wings?

 

a. In diagonal currents

b. Above

c. Below

d. Opposite the flaps

 

Answer: _____