A car owner forgets to turn off the headlights of his car while it is parked in his garage. If the 12.0-V battery in his car is rated at 43.0 A · h and each headlight requires 32.4 W of power, how long will it take the battery to completely discharge?

9.76 h.

Explanation:

Given:

V = 12 V

I × t = 43 Ah

Power, P = 32.4 W

Assume, 2 headlights:

P = 64.8 W

Power = Energy/time

Energy = I × V × t

= 43 × 12

= 516 J

Time = 516/64.8

= 7.69 h.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

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