Calculating Time to Heat 52 Gallons of Water

[Jason03]

the problem I am working on asks to find how long it would take to heat 52 gallons of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg

 

[berkeman]

the problem I am working on asks to find how long it would take to heat 52 pounds of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg

I'm not used to working in those units, but your approach looks sound. Did you get the correct answer? If not, try converting into mks units, and re-calculating to see what answer you get.

 

[Jason03]

Yea I am used to SI units as well...I just worked with the units given since the conversions were given...I guess I could try it the other way to if I did it correctly

 

[Redbelly98]

the problem I am working on asks to find how long it would take to heat 52 pounds of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg

Is the water 52 pounds or 52 gallons?

 

[Jason03]

good call...its 52 gallons.. but I did the correct conversion in my calculations...

 

[Redbelly98]

Looks like you got the correct answer. Is there any reason to think otherwise, or did you just want confirmation?

http://www.google.com/search?hl=en&q=26020+btu+/+(4800+W)&btnG=Search

 

[Jason03]

Thanks!...Just checking to see if it was right...