Poe Fluid Power Practice

An object is buoyed up when

• the buoyant force is less than the object's weight.

• the buoyant force is greater than the object's weight.

• the buoyant force equals the object's weight.

• there is high air pressure.

Tags

NGSS.3-PS2-1

When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.

• Pascal's Principle

• Newton's Principle

• Archimedes' Principle

• Bernoulli's Principle

If a hairdryer blows a stream of air between two soda cans hanging side by side, the soda cans will ____________________.

• rise

• move away from each other

• move toward each other

• not move

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The figure above shows water entering section 1 of a tube at a speed of 𝑣₁ = 20.0 𝑚/𝑠 through an area of cross-section 𝐴1 = 3.00 𝑚² . The water then flows through a narrower section 2 of area 1𝑚²

• 20.0 𝑚/𝑠

• 3.0 𝑚/𝑠

• 1.0 𝑚/𝑠

• 60.0 𝑚/𝑠

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Bernoulli’s principle states that the pressure in a fluid decreases as its velocity increases. 

• True

• False

If you increase your work and decrease your time, you will have

• more power

• less power

• same amount of power

• power rating can not be determined

The upward force exerted by a fluid is called the:

• buoyant force

• density force

• fluid force

• normal force

Which of the following is an example of when you can feel a fluid (like air) moving?

• wind blowing

• a room feeling warm

• sitting at a desk studying

• sleeping in a bed

Tags

NGSS.MS-ESS2-5

Which principle explains why hydraulic systems can multiply force?

• Pascal's Principle

• Newton's Third Law

• Archimedes' Principle

• Bernoulli's Principle

In a hydraulic lift, if the area of the small piston is 2 square meters and the area of the large piston is 10 square meters, what is the force exerted by the large piston if a force of 100 N is applied to the small piston?

• 500 N

• 1000 N

• 200 N

• 50 N

Tags

NGSS.MS-PS2-2