When energy is transferred through matter

what dose the Law of Conservation of energy mean?

means that energy can neither be created nor destroyed

2 or More atoms in a fixed ratio

the relationship of stress and strain

oscillation of molecules, kinetic and potential energy

Mechanical advantage is...

how much a force in amplified by when using a mechanism

What is malleability?

How easily a solid can be pounded into thin sheets

pure substance of 2+ diff. elements that are chem. combined

Any material that flows in a liquid or gas state

The smallest neutral part of a element

What is laminar flow?

steady uninterrupted flow with little resistance

What is mechanical advantage?

c. ratio of output force to input force

What is the definition of vibration?

Oscillatory movement of molecules within matter

What is the value of static friction compared to dynamic friction?

Static friction is more than dynamic friction

Weight is the measure of the force of gravity on an object

the average force on a certain area

The amount of energy lost when you are doing work., A comparison of the energy you put in and work you get out.

What is an example of mechanical resonance?

Wine glass breaking when someone sings, Quartz crystals in clocks, Bus engine vibrating the panels, Musical Instruments

Velocity ratio is........

the distance the effort has to move compared to the load at a given time.

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Mechanical physics 20-11-1970

31 termsStudBud Administration323 plays

Mechanical properties of physics for MEA148

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Questions 31

Answers

1
What type of force is acting at the blue arrows?
slipping
compression
tension
gravity
2
What is the velocity ratio of the pulley system below?
1/3
6
3
1/6
3
What is conduction?
A type of heat transfer that can occur via an electromagnetic wave
When energy is transferred through matter
The amount of energy needed to heat an object
Heat transfer asa liquid or gas moves around
4
Power is work x time
True
False
5
what dose the Law of Conservation of energy mean?
means that energy can neither be created nor destroyed
energy can be deystroyed and you cant creat energy
energy can be elastic but not malleable
none of the above
6
What is a molecule?
the same atom joined together
one kind of atom
a mixture joined together
2 or More atoms in a fixed ratio
7
What is elasticity?
the relationship of stress and strain
an elastic band
how far something will bend until it breaks
intermingling of fluids
8
Centripetal acceleration?
F=ma
Fc=mac
ac=r/v2
ac=v2/r
9
What is heat?
oscillation of molecules
work times velocity ratio
a collection of atoms arranged in a fixed ratio
kinetic and potential energy
10
Mechanical advantage is...
how efficiently a cam changes direction of motion
used to calculate the number of teeth in a gear train
the speed difference between two pulleys
how much a force in amplified by when using a mechanism
11
What is malleability?
How easily a solid can be scratched
Any material that flows; commonly in a liquid or gas state
How easily a solid can be pounded into thin sheets
How easily a solid will shatter
12
Work is the distance an object is made to move
False
True
13
what is compound?
pure substance of 4+ diff. elements that are chem. combined
pure substance of 5+ diff. elements that are chem. combined
pure substance of 3+ diff. elements that are chem. combined
pure substance of 2+ diff. elements that are chem. combined
14
What is a fluid?
Upward force of a liquid or gas on an object immersed in it
Any material that flows in a liquid or gas state
Compactness of a substance
How well a solid resists breaking under tension
15
What Is An Atom?
Two elements combined in a fixed ratio
A tiny positive particle missing an electron
A tiny negative particle missing an electron
The smallest neutral part of a element
16
What is laminar flow?
steady uninterrupted flow with little resistance
resistive flow with eddies due to turbulence
17
What weather tool measures air pressure?
barometer
thermometer
wind vane
rain gauge
18
What are the units for angular velocity?
radians
radians per second
rads
revolutions
19
What is Density?
Amount of volume per mass
An apparent force
Amount of mass per volume.
bowling ball vs feather in a vacuum
20
What effects the frequency of a harmonic oscillation?
Mass of the weight
length of the moment arm
distance from the equalibrium
size of the weight
21
What is mechanical advantage?
a. work divided by time
b. mass times gravitational pull times height
d. useful work output divided by total work input
c. ratio of output force to input force
22
What is the definition of vibration?
energy transfered by a longitudinal wave
A continuous sond with variation in frequency
oscillation of a pendulum
Oscillatory movement of molecules within matter
23
What is the value of static friction compared to dynamic friction?
Static friction is has no relation to dynamic friction
Static friction is equal to dynamic friction
Static friction is less than dynamic friction
Static friction is more than dynamic friction
24
What is the weight?
Is the volume of the object
Weight is the measure of the force of gravity on an object
Is the shape of the object
Is a force of attraction
25
Which of the following is not a pitot static instrument?
Air Speed Iindicator
Pitot heater
Altimeter
Vertical Speed Iindicator
26
What is pressure
the average force on a certain area
a force that pushes or pulls
Amount of particles pushed in the air
the density of a solid
27
What is efficiency?
The amount of energy lost when you are doing work.
The ability to sustain work without getting tired.
How good something works.
A comparison of the energy you put in and work you get out.
28
Centripetal means
tangent
center seeking
center fleeing
29
In relation to gyroscopic action, inertia of the rotor effects precession
True
False
30
What is an example of mechanical resonance?
Wine glass breaking when someone sings
Quartz crystals in clocks
Bus engine vibrating the panels
Musical Instruments
31
Velocity ratio is........
reduced by friction / weather / pressure ect
compares the weight of the load and the effort required to move it.
the distance the effort has to move compared to the load at a given time.
nothing to do with distance

Mechanical physics 20-11-1970 Flashcards | StudBud