How much time is needed to push a 5,000 N car 50 meters if you are using a machine with a power of 4,500 W?

Which describes increasing the efficiency of energy resource

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to

Mr. polifka does a demonstration in science class. he holds an unlit match six inches above a candle flame. after a while, the match bursts into flame.