Basic physics

Question 1

What is matter

Answer 1

Anything that occupies space and has mass

Question 2

What are the different states of matter

Answer 2

Solid, liquid, gas, plasma

Question 3

When fluid passes through the middle section of Venturi, what pressure and velocity changes occur

Answer 3

Pressure drops velocity increases

Question 4

Are liquids compressible

Answer 4

No

Question 5

What is the standard atmospheric pressure at sea level

Answer 5

14.7 psi or 29.92 inches of HG

Question 6

What is the standard daytime temperature

Answer 6

59°F

Question 7

What is the name of the atmospheric phenomenon were cold air is trapped near the earth by warmer air

Answer 7

A temperature inversion

Question 8

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

Answer 8

662 kn or 761 mph

Question 9

What is meant by the density of air

Answer 9

The mass of a given volume of air

Question 10

What determines the density of the air

Answer 10

Temperature and pressure acting on it

Question 11

What does specific gravity mean

Answer 11

It is the ratio of a substance density to the density of pure water

Question 12

What are the three basic parts of a lever

Answer 12

Fulcrum, force of effort, and resistance

Question 13

What is the first class lever, and give an example

Answer 13

When the fulcrum is located between the effort and the resistance the example of a first class lever is a seesaw

Question 14

In what direction is forced transmitted to a confined liquid

Answer 14

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

Question 15

What is the formula for computing force, pressure, an area

Answer 15

Force equals pressure times area F= P x A

Question 16

What is kinetic energy

Answer 16

Energy in an object created from its Movement

Question 17

What is potential energy

Answer 17

Energy that is stored and can be turned into kinetic energy

Question 18

What is absolute zero

Answer 18

It is the temperature at which all motion of the atoms Will cease entirely in a given sample of gas. It is considered to be -273°C

Question 19

What are the two factors Involved in work

Answer 19

Force and movement through a measurable distance

Question 20

How is pressure expressed in hydraulics and pneumatics

Answer 20

It is expressed in pounds per square inch

Question 21

Name the forms of energy they can be converted into heat energy

Answer 21

Mechanical, electrical, chemical, radiant, nuclear, and solar

Question 22

What are the three methods of heat transfer

Answer 22

Conduction, convection and radiation

Question 23

What are the three types of friction

Answer 23

Rolling, sliding, and static

Question 24

What are the four forces experienced by an aircraft in flight

Answer 24

Gravity, thrust, lift, and drag

Question 25

What is an autorotation

Answer 25

When the helicopter rotor blades spin without engine power has air flows through the rotor

Question 26

How does blade flapping help compensate for the cemetery of lift in helicopter main router systems

Answer 26

By increasing the angle of attack on the retarding blade, and decreasing angle of attack on the advancing blade

Question 27

What is the name of the imaginary line that runs from the leading edge, to the trailing edge of an air foil

Answer 27

Chord line

Question 28

What function do wing mounted Vortext generator serve

Answer 28

Prevent airflow separation from the upper surface of the wing

Question 29

What is directional stability

Answer 29

The ability of an aircraft to avoid yawing

Question 30

What is magnetism

Answer 30

Motion of an electric charge, resulting in a tractive and repulsive force between objects