A current of 12 amps flows through an ohmic conductor when a potential difference of 2.0 V is applied across it. Assume the temperature of the conductor remains constant. a) Calculate the resistance of the conductor. b) Calculate the current through the conductor when the potential difference across it is 35 V.

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.