a parallel combination of a resistor and an unknown resistor is connected in series with a resistor and a battery this circuit is then disassembled and the three resistors are then connected in series with each other and the same battery in both arrangements the current through the resistor is the same what is the unknown resistance

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.