chapter 3 principles of aviation physics Test 1

__________is the smallest part of any substance?

Molecule

The flow and hydrometer Is indicating 1.000. It is measuring the specific gravity of__________

Pure water

The Hydro meter reading of a charge battery is__________

1.275

Energy that can be stored is called__________ energy

Potential

A body in motion is said to have__________ energy

Kinetic

Force times displacement equals__________

Work

__________ Is defined as the rate of doing work

Power

__________Is an example of a second class barrel

wheel barrel

__________Can be used to change direction and speed

Bevel gear

______ candor levers have a fulcrum located between

First class lever

The most basic of all things in physical and the material world is?

Matter

How many natural elements are there?

92

A Hydro meter is used to measure:

Specific gravity

The specific gravity of pure water is:

1.000

An aircraft maintenance a hydrometer is used to measure:

The state of charge of a lead acid battery

A hydrometer reading of a discharge battery will be:

1.150

In the metric system, the unit of work is the:

Joule

In the United States, power is expressed as:

Horsepower

Which of the following is not part of a planetary gear system?

Bevel gear

Which one of these is a part of all levers?

Fulcrum

Explain the difference between the chemical nature of matter and the physical nature of matter. what are the physical states of matter?

Matter can neither be created or destroyed, but its state can be changed by chemical and physical nature.

Physical state of matter is solid, liquid, gas

Define potential energy and kinetic energy. How do they relate to the technical definition of work?

Work is required to create potential energy and release kinetic energy

Suppose a 10,000 pound aircraft is lifted 8 feet in the air in 5 minutes by one person with a hoist. how much power is developed by the person cranking the hoist? How much horsepower?

10,000×8÷5 = 16,000 Foot pounds per minute. 16,000 divided by 33,000 to get horsepower, horsepower is 0.48

Describe the three types of levers and the relative position of effort, fulcrum, and weight in each.

First class lever – The fulcrum Is between the effort And power

Second class lever– Has the fulcrum at one end, The effort is applied at the other.

Third class lever – effort is applied between the fulcrum and resistance