The circuit layout is given. The power of the voltage source \(P_E\)=-50 W, power of the current source \(P_J\)= -50 W. What will these powers be if the resistance value R is reduced by 2 times? E, J=const. Supplementary material:

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

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If forces acting on an object are unbalanced. true or false