Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 778-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min 6 X 95% of the power supplied by the motor goes into increasing the kinetic energy of the car. A (b) climb a 200-m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 523 N of force to overcome air resistance and friction 6.7 In this case, 95% of the power supplied by the motor goes into increasing the potential energy and into the work done against air friction. How is work done related to the applied force and distance traveled? A Additional Materials Reading TutorialAn AC voltage source is connected to a resistor R = 1.05 x 102 R. The output from an AC voitage source is given by the expression V = (1.10 x 1.02 V) Sin 2114?. (a) What is the rms voltage across the resistor\"? |:|V (b) What is the rms current owing through the resistor? |:| A Additional Materials III Reading (a) What is the hot resistance of a 35.0 W Iig ht bulb with a tungsten filament that runs on 120 V AC? :9 (b) If the bulb's operating temperature is 2?DOC, what is its resistance at 2610C? The temperature coefficient of resistivity of tungsten is 4.50 X 10'3 c'C'l. E 9 Additional Materials III Reading