Fluid Pressure Chapter 13

Question 1

Pressure describes a ______________ applied to a given area.

Accepted Answer

Force

Question 2

The science of applying Pascal's principle is called

Accepted Answer

hydraulics.

Question 3

The larger area of the output piston produces the increased force used to lift the load.

Accepted Answer

TRUE

Question 4

At a given depth a fluid exerts ___ equally in all directions.

Accepted Answer

pascals, pressure

Question 5

The forces exerted against the walls of the plastic container are also ___ at a given depth.

Accepted Answer

equal

Question 6

Atmospheric Pressure at sea level is...

Accepted Answer

14.7 PSI

Question 7

Which Principle?

Accepted Answer

Pascal

Question 8

A typical spray bottle uses Bernoulli's principle by creating

Accepted Answer

pressure differences between the top & bottom., an upward force causing the liquid to flow outwards.

Question 9

If a boat displaces 4,000 lbs of water and is floating, what must the boat weigh?

Accepted Answer

4000 Lbs

Question 10

Which statement best describes the increased output force that is exerted on the larger piston?

Accepted Answer

a constant fluid pressure is exerted on the larger area

Question 11

A force is applied to a confined fluid and pressure goes up equally in the fluid.

Accepted Answer

Pascal

Question 12

"Lift" is the upward force created when wind passes faster

Accepted Answer

over a wing than under it.

Question 13

Bernoulli's principle states that as the speed of a fluid increases, the pressure inside the

Accepted Answer

fluid decreases.

Question 14

The pressure inside the bottle also ___ with depth.

Accepted Answer

increases

Question 15

If a submarine starts to displace LESS water....

Accepted Answer

Buoyant Force Decreases

Question 16

Which statement best describes Pascal's principle?

Accepted Answer

pressure is passed undiminished in an enclosed static fluid

Question 17

Fluids may also increase speed due to the ___of an object.

Accepted Answer

shape

Question 18

Which Principle?

Accepted Answer

Bernoulli

Question 19

A ping pong ball is levitated by the blow dryer because the air is

Accepted Answer

moving faster than the surrounding air.

Question 20

Spoilers mounted on race cars act as a(n)

Accepted Answer

downward force to help keep the tires on the road., "upside down" airplane wing to increase stability.

Question 21

Which of these examples best illustrates Pascal's Principle?

Accepted Answer

A heart pumping blood throughout the body

Question 22

Where would pressure be higher on a moving curveball?

Accepted Answer

Top

Question 23

A pressure law describing the buoyant force and how its equal to the displaced water weight.

Accepted Answer

Archimedes

Question 24

Pressure increases ___ throughout the fluid - not just at the squeeze points.

Accepted Answer

dramatically, equally

Question 25

If a boat is 10,000 Newtons and is displacing 8,000 Newton's of water, does it float?

Accepted Answer

No

Question 26

At sea level, air pressure is...

Accepted Answer

100%

Question 27

As you go up on a mountain, air pressure...

Accepted Answer

Decreases

Question 28

The key to how a hydraulic system works is that the pressure pushing on the larger piston

Accepted Answer

acts on a much larger area.

Question 29

Hydraulic. Input force is 100 N and the area of the piston is 300 cm2. Pressure in system?

Accepted Answer

.3 N/cm2

Question 30

If a boat's weight is equal to the buoyant force.

Accepted Answer

It Floats

Question 31

Which Principle?

Accepted Answer

Archimedes

Question 32

The ping pong ball moving sideways stays within the lower-pressure rushing air because

Accepted Answer

higher-pressure air outside the air flow pushes it back.

Question 33

Which of these air foils would provide the least lift and drag?

Accepted Answer

NACA Munk M-4

Question 34

Which law describes faster fluids creating low pressure?

Accepted Answer

Bernoulli

Question 35

Which of these examples best illustrates Bernoulli's principle?

Accepted Answer

A Chimney pulling smoke out of the house

Question 36

Why would a small heavy object most likely sink?

Accepted Answer

It can't displace enough water to equal its weight.

Question 37

A device using pressurized fluid moving on different sized pistons is called a(n)

Accepted Answer

hydraulic system.

Question 38

The amount of the input force that is increased depends on the piston sizes.

Accepted Answer

TRUE

Question 39

If the large piston has 4 times the area of the small piston, then the output force is

Accepted Answer

4 times greater than the input force.

Question 40

The pressure produced by the small piston is transmitted through the fluid equally to the

Accepted Answer

large piston.

Question 41

Where is the fluid pressure lower on an airfoil (wing)?

Accepted Answer

On top of the wing

Question 42

Which Principle?

Accepted Answer

Bernoulli

Question 43

What does a hydraulic system do and why is it so useful?

Accepted Answer

Uses pressure to multiply output force

Question 44

Your blood's pressure is...

Accepted Answer

2.3 lb/in2

Question 45

If a 1000-N man is standing on feet with an area of 200 cm2, how much pressure?

Accepted Answer

5 N/cm2

Fluid Pressure Chapter 13

Questions 45

Fluid Pressure Chapter 13

Questions 45