Basic Physics

Question 1

1. What is matter?

Answer 1

Anything that occupies space & has mass

Question 2

2. What are the different states of matter?

Answer 2

Solid
Liquid
Gas
Plasma

Question 3

3. What are two types of fluids?

Answer 3

Liquids & gas

Question 4

4. When a fluid passes through the middle section of a Venturi, what pressure & velocity change occurs?

Answer 4

Pressure drops & velocity increases

Question 5

5. Are liquids compressible?

Answer 5

No

Question 6

6. What is the standard atmospheric pressure at sea level?

Answer 6

29.92 inches of HG

Question 7

7. What is the standard day temperature?

Answer 7

59 degrees F

Question 8

8. What is the name of the atmospheric phenomenon where cool are is trapped near the earth by warm air?

Answer 8

Temperature Inversion

Question 9

9. What is the speed of sound through the air under standard sea level conditions?

Answer 9

662 knots or 761 mph

Question 10

10. What is meant by the density of air?

Answer 10

The mass of a given volume of air

Question 11

11. What determine the density of the air?

Answer 11

Temperature & pressure acting on it

Question 12

12. What does specific gravity mean?

Answer 12

Ratio of pure water to substance’s density

Question 13

13. What are the three basic parts of a lever?

Answer 13

Fulcrum
Force of effort
Resistance

Question 14

14. What is a first class lever, and give an example?

Answer 14

When a fulcrum is located between the effort and the resistance. I.E. a seesaw

Question 15

15. In what direction is force transmitted to a confined liquid?

Answer 15

Force is transmitted equally in all directions because it cannot be compressed

Question 16

16. What is the formula for computing force, pressure, and area?

Answer 16

Force = pressure x area

Question 17

17. What is kinetic energy?

Answer 17

Energy created from its movement

Question 18

18. What is potential energy?

Answer 18

Energy that is stored and can be turned into kinetic energy

Question 19

19. What is absolute zero?

Answer 19

-273 degrees C all motion of atoms cease

Question 20

20. What are the two factors involved in work?

Answer 20

Force & movement through a measurable distance

Question 21

21. How is pressure expressed in hydraulics and pneumatics?

Answer 21

Pounds per square inch (PSI)

Question 22

22. Name the forms of energy that can be converted into heat energy?

Answer 22

Mechanical 
Electrical
Chemical
Radiant
Nuclear
Solar

Question 23

23. What are the three methods of heat transfer?

Answer 23

Conduction
Convection
Radiation

Question 24

24. What are the three types of friction?

Answer 24

Rolling
Sliding
Static

Question 25

25. What are the four forces experienced in flight?

Answer 25

Gravity Thrust Lift Drag

Question 26

26. What is an autorotation?

Answer 26

Helicopter rotor blades continue to spin without engine power as air flows through the rotor

Question 27

27. How does blade flapping help compensate for dis symmetry of lift in a helicopter main rotor system?

Answer 27

By increasing the angle of attack on the retreating blade, & decreasing angle of attack on the advancing blade

Question 28

28. What is the name of the imaginary line the runs from the leading edge to the trailer edge of an airfoil?

Answer 28

Chord line

Question 29

29. What function do wing mounted vortex generators serve?

Answer 29

Prevent airflow separation from the upper surface of the wing

Question 30

30. What is directional stability?

Answer 30

Ability of an aircraft to avoid yawing

Question 31

31. What is magnetism?

Answer 31

Motion of electric charge, resulting in attractive & repulsive forces between objects