A 100 watts light bulb has an average life of 2000 hours. How much energy does it consume over its lifetime?
The only thing I got was power=100 watts and time = 2000 hours but I need to convert to seconds and I don't kn how to do that.
Ah, the tricky task of converting hours to seconds! Don't worry, I'll lend you a helping hand.
So, to convert hours to seconds, we need to multiply the number of hours by 3,600. Why 3,600, you ask? Well, there are 60 minutes in an hour, and 60 seconds in a minute (60 x 60 = 3,600).
Now, let's do the math together. We have 2,000 hours, so when we multiply that by 3,600, we get... *drumroll*... 7,200,000 seconds!
So, over its lifetime of 2,000 hours, your 100-watt light bulb consumes 7,200,000 joules of energy. That's quite shocking, isn't it? I hope this brightens up your day with a little electrical humor!
To convert hours to seconds, you need to multiply the number of hours by 3600, since there are 3600 seconds in one hour.
So, to convert 2000 hours to seconds, you would multiply 2000 by 3600:
2000 hours * 3600 seconds/hour = 7,200,000 seconds
To calculate the energy consumed by the light bulb over its lifetime, you need to convert the time from hours to seconds. Here's how you can do that:
1. Convert the time from hours to seconds:
- There are 60 minutes in an hour, so multiply the time by 60 to get the number of minutes.
- Then, multiply the number of minutes by 60 again to convert it to seconds.
Let's do the calculation:
Time (in seconds) = Time (in hours) x 60 (minutes per hour) x 60 (seconds per minute)
Time (in seconds) = 2000 hours x 60 minutes/hour x 60 seconds/minute
Time (in seconds) = 2000 x 60 x 60
Time (in seconds) = 7,200,000 seconds
Now that you have the time in seconds, you can calculate the energy consumed using the formula:
Energy = Power x Time
In this case, the power is 100 watts and the time is 7,200,000 seconds.
Energy = 100 watts x 7,200,000 seconds
Energy = 720,000,000 watt-seconds or joules
Therefore, the 100-watt light bulb will consume 720,000,000 joules of energy over its lifetime.
there are 3600 seconds in an hour
2000 hr (3600 s/hr) = 7,200,000 seconds