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### 70 Cards in this Set

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• Back
 force equals mass * what? acceleration what is force? a push or pull that causes a change in shape or motion voltmeters measure what? voltage difference the two types of fluids are? hydraulic and pnuematic are gases compressible? yes multimeters measure what? voltage, amperage, and resistance the positive pole in an electrode is called what? anode are liquids compressible? no density is found by: mass divided by volume manometers are used to measure: pressure differemces heat is characterized by: vibrating motion of atoms and molecules what is torque? force-like quanity in rotational mechanical system thermocouples use how many wires? 3 the negative pole is called: cathode a hydrometer is used to measure: density or specific gravity in liquids work equals: force times distance input work is performed by: a human or motor output work is: work done by the system spring scales are used to measure: input and output force the basic unit of work in the english system is? foot-pound the basic SI unit of work is: newton-meter when is linear mechanical energy performed? when a mass is moved in a straight line when is angular work performed? when a mass is moved in an axis or rotation mechanical work causes an object to: start moving, stpo moving, or change directions fluid work equals: pressure difference times volume moved in a closed system the fluid is: reused is there such thing as linear or angular fluid work? no when is electrical work done? a voltage moved a specifiedamount of electrical charge what is the symbol for charge? q what is the basic unit for electrical work? joule rate equals: displacement like quanity divided by elapsed time velocity is: the measure of linear mechanical work is speed scalar? yes what is the english unit for rate? foort per second what is the SI unit for rate? meter per second how many radians are in one revolution? 6.28 what is the english unit for angular rate? revolutions per second what is the SI unit for angular rate? radians per second the strobescope is used to measure? angular rate in fluid systems ,what is flow rate? volume of fluid moved in a given period of time volume flow rate is symbolized by: Qv what are the english units for fluid flow? gallons per minute a dewar flask is used to: store heat energy heat flow rate is symbolized by: Qh hertz is a measure of: frequency what is the unifying eqaution for resistance? forcelike quanity divided by a rate what are the two forms of resistance? friction and drag what is the equation for the force of friction? coefficent of friction times force what must be overcome to start an object in motion? sliding friction kinetic friction must be overcome to: keep an object in motion how can friction be reduced? lubricants what is fluid resistance? resistance generated by a solid moving through a liquid laminar flow is the opposite of what? turbulent flow what is an example of an conductor? copper what is an exapmle of an insulator? plastic what is a semi conductor? silicon what is resistivity? quality of a material that describes how muchit permits electricity to to flow through it what is thermal resistance? opposition to flow of heat through a material conductivity is what: inversely proportional to resistivity what is the equation for thermal resistance? delta t divided Qh what is energy? the ability to do work what is energy used for? overcome resistance what is the equation for potential energy? force times height what does k stand for? spring constant capitance is measured in: farads what are inductors? electronic devices that consists of coils of wire rapped around a core what are the units for I? amps what is the weight density of water? 62.4 Lb/ft^3 what is radiation? transfer of heat energy by electromagnetic radiation what are the units for energy? calories and BTU's