2nd Semester Review Pt2: Question Preview (ID: 9801)

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The total energy of a system remains
a) positive b) negative c) constant d) zero
Unit used to measure energy in food
a) joule b) kg c) Calorie d) newton
Si unit for energy
a) Watt b) newton c) Joule d) kgm
A bus transfers chemical potential energy to ____ so that the bus moves
a) thermal b) GPE c) Electrical d) Kinetic
Energy doesnt have to involve motion
a) true b) false c) d)
In a pendulum when the pendulum is at its highest point it is called
a) Maximum KE b) Kinetic c) Maximum Potential Energy d) GPE
The measurement of how well a machine operates is the machines
a) Mechanical advantage b) Power c) work d) efficiency
The rate at which work is done
a) effeciency b) effort time c) power d) force
The output work of a machine compared to the input work is the
a) efficiency b) power c) effort d) resistance
The amount a machine multiplies an effort force is called
a) efficiency b) resistance force c) fulcrum d) mechanical advatage
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