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anonymous
 one year ago
The total U.S. consumption of electricity in a particular year was 5.0 x 1012 kilowatthours. What is the mass equivalence of this amount of energy? Show all calculations leading to an answer.
anonymous
 one year ago
The total U.S. consumption of electricity in a particular year was 5.0 x 1012 kilowatthours. What is the mass equivalence of this amount of energy? Show all calculations leading to an answer.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Honestly, I've never seen this before, but I think you convert kWh to J and use E = mc²

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0quite right ....just calculate the year's energy in joules and then use E=mc^2 to find out the mass equivalence ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you walk me through changing it to joules please

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01 kilowatt hour = 3 600 000 joules

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0convert it your Kwh into joules then put it in E=MC^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0E being your energy in jouls ....and C being the speed of light

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so 5.0*10^12=5,000,000,000,000

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now multiply it by 3 600 000

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yu get your enerygy in jouls then

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0don t get rid of the exponantional notation here ...it help keeps the number small

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03 600 000 x (your enrgy in Kwh) = MC^2 you need to fing out M

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah ... there ya go ^_^

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and than the equation i need is M=E/C^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So M=1.8*10^19J/299792458m/s

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0gottta change m/s to J

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Basically, the equation states that matter and energy are identical. If you could convert a small amount of matter completely, it would yield a tremendous amount of energy. in your case how ever you are finding the mass cause you already know the energy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0everything should be in SI units ....like meter for distance jouls for energy ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what do i do than

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So M=1.8*10^19J/299792458m/s you said this was your answer right ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes but isnt there something more i have to do

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that figure is your answer .... express it in kilograms and your all set

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how do i express it in kilograms

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0just do 1.8*10^19/299792458 and add the alphabets Kg in the end

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would you believe it i am driving right now ....and i pull over to the side to answer your questions

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0are you clear on this ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0haha thank you so much

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0feel free to ask .... i am in the parking lot now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Would you help me with one more question if i post it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0depends if i can solve it myself .... ... hit me with it
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