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Aviation Physics Questions and Answers Already Passed, Exams of Aviation

What is matter? ✔✔Matter is what all things are made of. It's the foundation for any discussion of physics What is the Law of Conservation? ✔✔Matter can not be created or destroyed but it is possible to change it's physical state What's an example of the law of conservation? ✔✔the combustion process of liquid fuel or water from solid to liquid to vapor among others How is mass mathematically stated? ✔✔Mass=Weight divided by Acceleration due to gravity How is weight mathematically stated? ✔✔Weight=mass x gravity What is the only way to change the mass of an object? ✔✔to add or take away atoms What is weight? ✔✔a measure of the pull of gravity acting on the mass of an object

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Aviation Physics Questions and
Answers Already Passed
What is matter? ✔✔Matter is what all things are made of. It's the foundation for any discussion
of physics
What is the Law of Conservation? ✔✔Matter can not be created or destroyed but it is possible to
change it's physical state
What's an example of the law of conservation? ✔✔the combustion process of liquid fuel or water
from solid to liquid to vapor among others
How is mass mathematically stated? ✔✔Mass=Weight divided by Acceleration due to gravity
How is weight mathematically stated? ✔✔Weight=mass x gravity
What is the only way to change the mass of an object? ✔✔to add or take away atoms
What is weight? ✔✔a measure of the pull of gravity acting on the mass of an object
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Aviation Physics Questions and

Answers Already Passed

What is matter? ✔✔Matter is what all things are made of. It's the foundation for any discussion of physics

What is the Law of Conservation? ✔✔Matter can not be created or destroyed but it is possible to change it's physical state

What's an example of the law of conservation? ✔✔the combustion process of liquid fuel or water from solid to liquid to vapor among others

How is mass mathematically stated? ✔✔Mass=Weight divided by Acceleration due to gravity

How is weight mathematically stated? ✔✔Weight=mass x gravity

What is the only way to change the mass of an object? ✔✔to add or take away atoms

What is weight? ✔✔a measure of the pull of gravity acting on the mass of an object

What are the six characteristics of matter? ✔✔Mass and weight

Attraction

Porosity

Impenetrability

Density

Specific Gravity

What is mass? ✔✔a measure of the quantity of matter in an object

What is density? ✔✔the weight of a substance per unit of volume

The density of a gas______ in direct proportion to the _____ exerted on it. ✔✔Increases pressure

What is the standard chosen by physicists when comparing the densities of all liquids and solids? ✔✔Water

What is most commonly used as the standard when comparing the densities gasses ✔✔Air

What is force? ✔✔The intensity of an impetus, or the intensity of an input

What is the unit for force is both english and metric systems? ✔✔English-pounds

Metric-newtons

In mechanical sense, when is work done? ✔✔When a resistance is overcome by a force acting through a measureable distance

What direction would it take more work to move an object? Horizontally or vertically? ✔✔Vertically

What are 3 kinds of friction? ✔✔Static Friction

Sliding Friction

Rolling Friction

When an attempt is made to slide a heavy object along a surface, the object must first be broken loose. What type of friction is this? ✔✔Static Friction

Is sliding friction always more or less than static friction ✔✔always less

With regards to sliding friction does the area of the the sliding surface exposed to the sliding surface have any effect on the results? ✔✔no, none

The concept of power involves work, which was a force being applied over a measured distance, but adds on one more consideration. What is that consideration? ✔✔time

What is the formula for work? ✔✔Work=Force x Distance

What is the formula for Power? ✔✔Power= Force x Distance divided by time

The units for power depend on how ________ and ______ are measured ✔✔Distance and time

How many ft/lbs are in one horse power? ✔✔550 ft/lbs

How many watts are in one horse power? ✔✔746 watts

What is mechanical advantage? ✔✔a comparison of the output force to the input force or the output distance to the input distance

what are the three basic parts of any lever? ✔✔Fulcrum

Force or effort

resistance

The combination of force and distance applied to a lever creates what force that tries to cause rotation? ✔✔Torque

Where is the fulcrum located in a first class lever? ✔✔between the effort and the resistance

What is the location of the fulcrum and the effort applied in a second class lever? ✔✔The fulcrum is at one end and the effort is applied at the other

What is the only advantage of the single fixed pulley? ✔✔to change the direction of the force, or pull on the rope

In a single moveable pulley, what will the weight being lifted always be in relation to the effort being applied? ✔✔One half

What determines the mechanical advantage of a block and tackle? ✔✔The number of weight supporting ropes

What are bevel gears used for? ✔✔to change the plane of rotation

What gear system has an extremely high mechanical advantage? ✔✔The worm gear

To determine the amount of gear reduction in a planetary sun gear system what would you do? ✔✔The number of teeth on the ring gear is divided by the number of teeth on the sun gear

Name 5 types of stresses found in mechanical bodies ✔✔Tension

compression

torsion

bending

shear

what is speed? ✔✔simply a rate of motion.

what is velocity ✔✔the rate of motion in a given direction

what is acceleration? ✔✔the increase in the rate of motion over a period of time

A vector quantity must have both ____ and ____ ✔✔magnitude and direction

What is centrifugal force? ✔✔the force that pulls a spinning object away from its center of rotation

what is centripetal force? ✔✔the equal and opposite force required to hold the weight in a circular path

What is BTU ✔✔The amount of heat required to change the temperature of 1lb of water

How much work is one BTU equivalent to? ✔✔778 ft/lbs of work

How much work is one calorie equivalent to? ✔✔equal to the amount of heat required to change the temperature of 1 gram of water 1 degree

What is heat? ✔✔a form of energy

What is the boiling point of pure water in degrees centigrade? ✔✔100 degrees C

What is Specific heat? ✔✔The ratio of the amount of heat energy needed to raise the temperature of an specific mass of material 1 degrees C, the the amount of heat energy needed to raise the temperature of the same mass of pure ware one degree C

What are the 3 method of heat transfer? ✔✔Conduction

Convection

Radiation

What are the four temperature scales? ✔✔Centigrade, Fahrenheit, Kelvin, and Rankine

What is the difference between fluid and gas? ✔✔when a force is applied to a liquid it tends to be incompressible and gases are highly compressible

A solid body submerged in a liquid or a gas weighs less than when weighed in free space. What is this called? ✔✔Buoyancy

What determines the pressure exerted at the bottom of a colum of a liquid? ✔✔by the height of the liquid and not by the container

What is Pascal's law? ✔✔concept of the pressure set up in a fluid and how it relates to the force acting on the fluid and the surface area through which it acts

What is Bernoulli's principle? ✔✔That for an inviscid flow of a nonconducting fluid, and increase in the speed of the fluid occurs with a decrease in pressure

What is sound? ✔✔a series of disturbances in matter that human ears can detect

What are three things necessary for the transmission and reception of sound? ✔✔Source, medium for carrying the sound, and the detector

What are the two basic physical properties which govern the velocity of sound? ✔✔Density and elastictiy

What unit is sound intensity measured in? ✔✔decibels

What determines the pitch of sound? ✔✔By the vibrations or the sounding source

What is the Mach Number? ✔✔The ratio of the speed of an aircraft to the speed of sound

What happens to the density of the atmosphere with an increase in alitude? ✔✔It would remain fairly constant

What is Doppler effect? ✔✔Apparent rise in the pitch or frequency of a sound as its source approached the hearer, and the decrease in pitch as the source moves away