The term "velocity lag" refers to a
•  speed error.
•  acceleration error.
•  position error.

vale asking:
•  Please write your question here.

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How would you work out the work done by a machine assuming it is 100% efficient?
•  Input and output.
•  Mechanical advantage and output.
•  Mechanical advantage and input.

alexeft13 asking:
•  WHY?

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What is the SI units for specific heat capacity?
•  Jkg-1k-1.
•  J/S/C.
•  J/ kg.

alexeft13 asking:
•  WHY?

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If a light is beamed at a flat mirror, what is the angle it reflects at?
•  Reflective index.
•  Angle of incidence.
•   Reactive angle.

alexeft13 asking:
•  WHY??

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What is 1 btu/lb in j oules per kilogram?
•  2326 j/kg.
•  4 128 j/kg.
•  9.18 j/kg.

alexeft13 asking:
•  WHY

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