Find the number of significant figures in each of the following.
81.0 ± 0.8...
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Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge
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How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?
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Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
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