Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
50 Cards in this Set
- Front
- Back
|
Force=
|
Mass*Acceleration
|
|
|
What is force?
|
a push or pull
|
|
|
weight is :
|
the measurement of gravity times mass
|
|
|
How do you find density?
|
Mass divided by volume
|
|
|
What are the two types of fluids?
|
hydraulic and pneumatic
|
|
|
Are gasses compressible?
|
yes
|
|
|
Pressure increases with________.
|
depth in a fluid but is independent of volume.
|
|
|
Weight density is the ratio of _______.
|
of an objects weight to its volume.
|
|
|
Voltmeters measure what?
|
voltage difference
|
|
|
What is the positive pole in the battery call?
|
anode
|
|
|
What is the negative pole in the battery call?
|
cathode
|
|
|
What is the form of energy characterized by the vibrating movement of atoms and molecules?
|
Heat
|
|
|
Work equals what?
|
force times distance.
|
|
|
What is input work?
|
is work going into the system.
|
|
|
What is output work?
|
is work done by the system.
|
|
|
When is linear mechanical work performed?
|
when a mass is moved in a straight line.
|
|
|
When is angular mechanical work performed?
|
when a mass is moved around an axis or rotation.
|
|
|
Is the fluid reused in a closed fluid system like a hydraulic brake system?
|
yes
|
|
|
What is the basic unit of electrical work?
|
joule
|
|
|
What is the rate formula?
|
displacement like quantity divided by elasped time
|
|
|
What is velocity?
|
the measure of linear mechanical work.
|
|
|
Is speed scalar?
|
yes
|
|
|
In one revolution how many radians are there?
|
6.28
|
|
|
What is viscosity?
|
is the quality of a substance related to its thickness.
|
|
|
What is electrical rate?
|
is the amount of charge moved in a given period of time.
|
|
|
one milliampere is equal to what?
|
.001 amps
|
|
|
Hertz is the measure of what?
|
frequency in alternating current.
|
|
|
What is the equation for resistance?
|
a force like quantity divided by a rate.
|
|
|
what are the two forms of resistance?
|
friction and drag.
|
|
|
what is sliding friction?
|
must be overcome to start an object in motion
|
|
|
kinectic friction must be overcome to keep _____.
|
a moving object in motion.
|
|
|
How can friction be reduced?
|
lubricants
|
|
|
Is static friction always greater than kinectic friction?
|
yes
|
|
|
What is the unit of resistance?
|
omega
|
|
|
What are conductors?
|
are materials such as copper and solder that permit the free flow of electrons.
|
|
|
what are insulators?
|
are materials such as plastic and ceramic that do not permit the free flow of electrons.
|
|
|
How do you find total resistance?
|
found by adding the resistance values in the circuit.
|
|
|
Is inulation for homes expected to have a high R-value?
|
yes
|
|
|
What is energy?
|
the ability to do work.
|
|
|
Energy used to overcome resistance in a system is lost in the form of _____.
|
heat
|
|
|
what is potential energy?
|
stored energy
|
|
|
what is elastic potential energy?
|
is energy that an object has because its shape has been changed.
|
|
|
what is kinetic energy?
|
is the energy of motion possessed by a moving body.
|
|
|
what is electrical energy?
|
is potential energy and kinectic energy that are associated with the position or movement of electrical charge.
|
|
|
What are capacitance measured in?
|
farads
|
|
|
Calories and Btu are units of what?
|
energy
|
|
|
what is power?
|
is the rate of doing work.
|
|
|
what is one watt equal to?
|
one joule per second
|
|
|
one horsepower equals _____.
|
746 watts
|
|
|
What is radiation?
|
is the transfer of heat energy by electromagnetic radiation.
|
