energy consumed

[zaidrazzaq]

A television, whose power is 200 W, is on for two hours. Calculate the energy consumed in Joules and KW-h. If 1 kW-h cost 0.8 euro, how much we will have spent in their operation?
plz solve this

[no1_vern]

Hi Zaidrazzaq! Welcome to our community forum. I don't know the answer to your question, but I hope you will enjoy your stay here.

.8 euro/kWh?? Yikes!! Thats 10 times what I pay, are you sure you have your math question right?? Anyway, a Joule is 1 watt each second so for 200W = 200 joules each second. Simply multiply seconds x minutes in 2 hours. Also, 1 kWh = 1000 watts in one hour, since you know that you are using 200 watts each hour. . . Once you know that answer simply multiply by euros, right?

I have helped all I am willing to right now. WE are not here to do your homework. I didn't do all my homework, and look at me now, working the night shift, and getting paid much less than the people in my class who DID the homework, and being bored out of my skull wishing I had stayed in school so I could get a better job.

[Epidemic]

.4 KWH * .8???

why are you throwing in joules?

[no1_vern]

I thought it was because his teacher wanted the problems solved FOR joules and KWh

[Epidemic]

probably right.

[zaidrazzaq]

.4 KWH * .8???

why are you throwing in joules?

sir plz solve this mathematicaly completly
i would b very thankful to you

[zaidrazzaq]

I thought it was because his teacher wanted the problems solved FOR joules and KWh

sir plz solve this mathematicaly completly
i would b very thankful to you
i am doin it but my answer is wrong
plz solve cmpltly

[Epidemic]

well not to be too much of a jerk.

What is your answer right now? I mean if this is for school, I really should not do the work for you. Let me see what you are doing wrong and then perhaps we can guide you.

[zaidrazzaq]

well not to be too much of a jerk.

What is your answer right now? I mean if this is for school, I really should not do the work for you. Let me see what you are doing wrong and then perhaps we can guide you.

no sir this is asignment question my answer is coming 576 euros
plz wil u solve this step by step
i would b very grateful

[surreal]

Not before you give me 265 euros for the answer.

[osprey4]

I'll solve the problem for 199 euros, as long as they're not from Greece.

[Epidemic]

.80 Euros per KWH is the rate you pay for power
.4KWH calculate use

Rate * Use = expense

Wouldn't that be the same as saying .80 X .40 =

200W * 2 hours =400WH or .4 KWH

How many seconds are there in an hour?
60 seconds * 60 minutes =

.4 KWH * seconds = Joules
.4 * 3600 = ?

[The Birdman 472]

Also, if this is for an assignment, isn't best to ask your teacher if you need help? I mean, they're there to help you.

[surreal]

I'll solve the problem for 199 euros, as long as they're not from Greece.

You've beat me again! Curse you osprey!! (shakes fist!)

[Chuckiechan]

And learn how to spel...

[SoloCamo]

And learn how to spel...

No need to be rude about it, there are people outside of the US you know. And hopefully your typo was intentional.

__

This said, I agree, if this is for an assignment it would be best to reach your teacher in this case as they may want a specific formula used.

On top of that, it would not help you to learn for future assignments if the answer was simply given.