How to convert.....

Soontir C'boath · Post by **Soontir C'boath** » 2002-09-24 10:16pm

How do you convert joules and watts into tonnage? What's the ratio is a better question i think. Or am I getting the whole concept wrong........i'm lost here lol.

Cyaround,
Jason

Master of Ossus · Post by **Master of Ossus** » 2002-09-24 10:34pm

Watts are a measure of power. 1 Watt=1 Joule/second.

Tons are a measure of energy.

1 MT=4.18 X 10E15 joules.

GrandMasterTerwynn · Post by **GrandMasterTerwynn** » 2002-09-24 11:10pm

Soontir C'boath wrote:How do you convert joules and watts into tonnage? What's the ratio is a better question i think. Or am I getting the whole concept wrong........i'm lost here lol.

Cyaround,
Jason

A watt is equal to 1 joule per second. It's a measure of work. A joule is a measure of energy. Now when you say tonnage, you are meaning the explosive yield of a ton of TNT? One ton of TNT produces something like 4.184E+9 joules of energy. A megaton produces 4.184E+15 joules of energy, and a gigaton produces 4.184E+18 joules of energy.

Cheers,

Durandal · Post by **Durandal** » 2002-09-25 01:07am

You can't "convert" between Watts and Joules, any more than you can convert between years and megabytes.

Tonnage is derived from the approximate explosive energy released by 1 ton of TNT. So, 1 ton of energy is approximately equal to 4.2E9J.

A Watt is a rate, 1 Watt being equal to 1 Joule per second. There is no equivalence between Watts and Joules any more than between meters and meters per second.

A Watt is not a measure of work. A Joule is a measure of work. Work is force multiplied by displacement (a Newton-meter, or kg•m^2/s^2). Work and energy have the same units, but work is defined as useful energy.

For example, when a track runner runs around a track and finishes the race, he has expended energy, but he has done zero work, because he's right back where he started (hence the displacement term). In other words, the basic concept of track is useless in terms of work. :)

Howedar · Post by **Howedar** » 2002-09-25 01:11am

Well, he is stirring the air...

Spoonist · Post by **Spoonist** » 2002-09-25 03:23am

-->Durandal
Uhm, you can convert between watts and joules...

http://www.convertit.com/Go/ConvertIt/M ... verter.ASP
(really an excellent site...)
1
watt TO joule = ------
second
(power) (energy) (frequency)

watt =
2.84345136093995E-04 ton of refrigeration
(power)

etc

EmperorMing · Post by **EmperorMing** » 2002-09-25 04:07am

Thanks for the explanation.

Post by **NecronLord** » 2002-09-25 07:31am

http://www.onlineconversion.com

Wicked Pilot · Post by **Wicked Pilot** » 2002-09-25 12:45pm

Spoonist wrote:-->Durandal
Uhm, you can convert between watts and joules...

http://www.convertit.com/Go/ConvertIt/M ... verter.ASP
(really an excellent site...)
1
watt TO joule = ------
second
(power) (energy) (frequency)

watt =
2.84345136093995E-04 ton of refrigeration
(power)

Durandal was right, you cannot convert from joules to watts. Your arguement simply reinforces his arguement, and shows your ignorance of basic physics.

Durandal · Post by **Durandal** » 2002-09-25 01:27pm

-->Durandal
Uhm, you can convert between watts and joules...

Wrong. A Watt is a rate. Energy and work are amounts. They are not interchangeable, which the ability to convert between implies.

http://www.convertit.com/Go/ConvertIt/M ... verter.ASP
(really an excellent site...)
1
watt TO joule = ------
second
(power) (energy) (frequency)

Really? Then convert 1J to Watts for me.

watt =
2.84345136093995E-04 ton of refrigeration
(power)

etc

Well, duh. A Watt is a measurement of power.

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