Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

General > Basic Physics > Flashcards

Basic Physics Flashcards

1
Q

Define matter

A

Any substance that occupies space and has mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Matter may exist in what three states

A

Solid liquid gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is meant by pressure

A

Force that acts on a unit of area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define kinetic energy

A

Kinetic energy is energy in motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Work is the product of what two factors

A

Force in the distance moved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the parts of a lever

A

A rigid bar, and a pivot point called a fulcrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A wheelbarrow is an example of what class of lever

A

Second class lever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is meant by the fulcrum of a lever

A

The point about which the lever rotates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A seesaw is an example of what class of lever

A

A first class lever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is meant by the density of air

A

The weight of a given volume of air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What characteristic of the atmosphere determines the speed of sound?

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Are liquid compressible

A

No liquids are not considered compressible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Are all three states of matter affected by thermal expansion, and if so, which state is affected most

A

All three states of matter are affected with gases being affected the most

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a British thermal unit?

A

The amount of heat energy required to change the temperature of 1 pound of water, 1°F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Name the three methods of heat transfer

A

Conduction, convection, and radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What time to find the temperature at which all molecule motion ceases?

A

Absolute zero

17
Q

What is meant by the term absolute zero

A

The temperature at which all molecular motion ceases

18
Q

What are the customary units used to express hydraulic or pneumatic pressure in the United Stats

A

PSI, pounds per square inch

19
Q

Describe how pressure is transmitted when a force is applied to a confined fluid

A

Pressure is transmitted equally in all directions

20
Q

What formula expresses the relationship between force pressure and area

A

Force equals area times pressure

21
Q

What is the approximate speed of sound at sea level on a standard day?

A

661 knots or 750 mph

22
Q

What is the atmospheric pressure at? Sea level on a standard day?

A

29.92 inches of mercury

23
Q

What is the temperature on a standard day at sea level

A

59°F or 15°C

24
Q

What are the factors that determine density altitude?

A

Temperature in atmospheric pressure

25
Q

What is the term used to describe the ratio between the amount of moisture actually presented in the atmosphere as compared to the amount the air could hold if it were completely saturated

A

Relative humidity

26
Q

What are the four principal forces acting on an airplane in flight?

A

Lift, drag, thrust, and gravity

27
Q

What is the term that describes the angle between relative win and the cord line of an airfoil?

A

Angle of attack

28
Q

What are the factors that cause an airplane wing to stall?

A

Stall is caused when the angle of attack exceeds a critical value, and the air flow separate from the upper surface and becomes turbulent

29
Q

What are the principal effects that result from lowering the flaps in flight

A

Lift increases, drag increases, stall speeds decrease

30
Q

What is the function of a wing mounted Vortx generator?

A

Vortx generators delay or keep the airflow from separating from the upper surface of the wing during high-speed flight

31
Q

How does blade flapping help to compensate for dissymmetry of lift and a helicopter main rotor system?

A

Blade flapping serve to increase the angle of a tact and lift on the retreating blade side of the rotor, and decreases the angle of attack and lift on the advancing blade side

32
Q

How does the airflow through the main rotor of a helicopter change during the transition from normal flight to auto rotation?

A

During normal flight, the air moves downward, and during auto rotation, the air moves upward

33
Q

What is friction?

A

The opposition to relative motion between two objects in contact with each other

General (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions