Physics

Question 1

Matter many exist in what three states?

Answer 1

Solid, liquid, and gas

Question 2

Define kinetic energy?

Answer 2

Is the energy of motion

Question 3

Work is the product of what two factors?

Answer 3

Force and distance moved.

Question 4

What is the part of a lever?

Answer 4

A rigid bar and fulcrum.

Question 5

A wheelbarrow is an example of what class lever?

Answer 5

Second- class lever

Question 6

What is the British Thermal Unit?

Answer 6

The amount of heat energy needed to raise 1 pound of water 1 degree Fahrenheit.

Question 7

Name three methods of heat transfer.

Answer 7

Convection, conduction, and radiation

Question 8

What term defines temperature at which molecular motion ceases?

Answer 8

Absolute zero

Question 9

Can a liquid be compressed?

Answer 9

No. They are considered incompressible

Question 10

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

Answer 10

Pounds per square inch.

Question 11

Describe how pressure is transmitted when force is applied to a confined liquid.

Answer 11

It is transmitted equally in all directions.

Question 12

What formula expresses the relationship between force, pressure and area?

Answer 12

Force = pressure X area

Question 13

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

Answer 13

662 knots

Question 14

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

Answer 14

29.92 inches of mercury

Question 15

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

Answer 15

Yes all three are, but gases are affected the most.

Question 16

What is the factor that determines density altitude?

Answer 16

Temperature and pressure

Question 17

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

Answer 17

Lift, drag, thrust and gravity

Question 18

What is the term that describes the angle between the relative wind and the chord line of an airfoil?

Answer 18

Angle of Attack

Question 19

What is friction?

Answer 19

The relative motion between to objects in contact with each other.

Question 20

What is the function of wing mounted vortex generator?

Answer 20

Keeps the airflow from separating from the upper surface of a wing during high speed flight.

Question 21

What are the principle effect that results from lowering the flaps while in flight?

Answer 21

Lift increases, drag increases and stall speed decreases

Question 22

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

Answer 22

The angle of attack exceeds a critical value and the airflow separates from the upper surface and becomes turbulent.

Question 23

Define matter

Answer 23

Matter is anything that takes up space and has weight

Question 24

What are three basic parts of a lever

Answer 24

Fulcrum,load and effort

Question 25

What is absolute zero

Answer 25

When molecules stop moving in a gas

Question 26

What is a first class lever and a example of a first class lever

Answer 26

Example is a see-saw and it’s when the fulcrum is between the effort and resistance