• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/73

Click to flip

73 Cards in this Set

  • Front
  • Back
what is the formula for force?
mass x acceleration
what is force?
push or pull that causes a change in shape or motion
what is torque?
force like quantity in rotational mechanical systems
what is a hydrometer used for?
measure density and specific gravity in liquids
what are manometers used for?
measure pressure difference
How is ablsolute pressure measured?
in reference to a vacuum
what are the two forms of current?
AC DC
what is weight density of water?
62.4 lbs per foot cubed
what is heat?
form of energy characterized by the vibrating movement of atoms and molecules
what is weight density?
ratio of an objects weight to its volume
what is formula for weight?
gravity x mass
when opposing forces are equal they are said to be in a state of what?
Equilibrium
what do voltmeters measure?
voltage difference
what do multimeters measure?
voltage amperage and resistance
what is temperature?
measure of the average energy of motion of molecules in a substance
what is formula for work?
force x distance
what is input work?
work going into a system
what is output work?
work done by system
what is efficiency?
output work divided by input work multiplied by 100
what do spring scales measure?
input and output force
what is english unit of work?
foot-pound
what is si unit of work?
newton meter
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
what is formula for fluid work?
pressure difference times the volume moved
in which system is the fluid reused?
closed system
how do u find the cross sectional area of a cylinder?
.7854 x diameter squared
when is electrical work done?
when a voltage move a specified amount of electrical charge
how can electrical charge be calculated?
multiplying amperes by time
what is basic unit of electrical work?
joule
when is input work performed?
by electrical pump
how do u find work done by a piston?
pressure exerted by a piston multiplied by area of piston face
how do u calculate fluid work?
height a fluid is raised and weight density of fluid
what is rate?
displacement-like quantity divided by elapsed time
what does velocity measure?
linear mechanical work
what is english units for linear mechanical rate?
foot per second
what is si units for linear mechanical rate?
meter per second
what is si units for angular rate?
radians per second
what is english unit for angular rate?
revs per minute
what is acceleration?
rate at which speed increases or decreases
what is si unit for acceleration?
meter/sec squared
what is english unit for acceleration?
meter/sec squared
what does a stoboscope measure?
angular rate
what is flow rate?
volume of fluid moved in a given period of time
what is viscosity?
quality of a substance related to its thickness
what is the milliampere equal to?
1/1000 amps
what is hertz?
measure of frequency in alternating current
what is a dewar flask?
used to contain and store heat energy
what is equation for resistance?
force like quantity divided by a rate
what must be overcome to start an object in motion?
sliding friction
what must be overcome to keep a moving object in motion?
kinetic friction
what is the opposite of turbulent flow?
laminar flow
what is equation for drag resistance?
force divided by velocity
what represents electrical resistance?
RE
what represents voltage difference?
DV
what represents electrical current flow?
I
how can friction be reduced?
adding lubricants
what does drag resistance result from?
disruption of air flow
what are insulaters?
materials such as plastic that do not permit the free flow of electrons
what are conductors?
materials such as copper and solder that permit the free flow of electrons
what does electrical resistance depend on?
type of material
what are semi conductors?
materials that allow some current to pass through
what is thermal resistance?
opposition to the flow of heat through a material
what is energy?
ability to do work
what is potential energy?
stored in a mechanical fluid
what represents spring constant?
k
what represents force?
f
what is the formula for spring constant?
k=f/d
what is electical energy?
energy associatedwith the position or movement of electrical charge
what is the units for capacitance?
farads
what is units for inductance?
henries
total energy in a system is equal to what?
sum of the potential energy and kinetic energy
gravitational potential energy is what?
energy that an object has because it has been raised against the gravitational pull of the earth