An all-electric car (not a hybrid) is designed to run from a bank of 12.0 V batteries with total energy storage of 2.30 ✕ 107 J. (a) If the electric motor draws 8.80 kW as the car moves at a steady speed of 20.0 m/s, what is the current (in A) delivered to the motor? A (b) How far (in km) can the car travel before it is "out of juice"? km (c) What If? The headlights of the car each have a 55.0 W halogen bulb. If the car is driven with both headlights on, how much less will its range be (in m)? m

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

hypothesising or postulating

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.