A 100-W light bulb is left on for 8.0 hours. Over this period of time, how much energy was used by the bulb?Select one:a.2 880 000 Jb.​28 800 Jc.1.34 hpd.800 Je.288 000 J

To solve this problem, we need to convert the power of the light bulb, which is given in watts, to energy, which is measured in joules.

1. First, we need to convert the time the light bulb is on from hours to seconds because the standard unit of time in physics is the second. There are 3600 seconds in an hour, so 8.0 hours is 8.0 * 3600 = 28,800 seconds.

2. Power is defined as the rate of energy transfer, or the amount of energy transferred per unit time. The unit of power is the watt (W), which is equivalent to one joule per second (J/s). So, a 100-W light bulb uses 100 joules of energy every second.

3. To find the total amount of energy used, we multiply the power of the bulb by the total time it was on. So, the energy used is 100 J/s * 28,800 s = 2,880,000 J.

So, the correct answer is a. 2,880,000 J.