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The joule (symbol J), named for James Prescott Joule, is the derived unit of energy in the International System of Units. It is the energy exerted by a force of one newton acting to move an object through a distance of one metre. In terms of dimensions: DefinitionOne joule is defined as the amount of work done by a force of one newton moving an object through a distance of one metre. Other relationships are:
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GNU Free Documentation License How many joules of energy are required to raise the temperature of 100 g of gold from 20.0 C to 75 C? Q. How many joules of energy are required to raise the temperature of 100 g of gold from 20.0 C to 75 C? Asked by The Trickster - Mon Dec 3 17:47:29 2007 - - 1 Answers - 0 Comments A. Use -- Q = m * c * deltaT You know the mass and the change in temperature. Look up specific heat for gold in CRC or your textbook. Answered by Clueless Dick - Mon Dec 3 18:06:28 2007 How to calculate kinetic energy in joules? Q. Homework question. "A pendulum with a weight of 2 kg, initially at rest, swings from a position where its gravitational potential energy is 500 joules. How much kinetic energy does it possess at the bottom of its swing?" How do I do this? Asked by Lily B - Tue Dec 30 16:12:27 2008 - - 1 Answers - 0 Comments A. At the bottom of the swing, the pendulum has zero potential energy; it only has kinetic energy. That is, the original state of 500 joules potential energy has all been converted to kinetic energy of 500 joules. Answered by capwest5a - Tue Dec 30 19:22:58 2008 How would i calculate how many Joules of energy are in a kW-h?
Q. How would i calculate how many Joules of energy are in a kW-h? also, how would i determine how many Joules of electrical energy you can buy for a dollar locally, where the average cost is 7.28 cents per kW-h? Asked by Tommy D - Tue Nov 18 21:47:22 2008 - - 2 Answers - 0 Comments A. 1 joule/sec is 1 watt 1 watt-sec is 1 joule 1 watt hour is: 1 watt hour x 3600 sec/hr = 3600 watt-sec = 3600 joules. 1000 watt hours x 3600 sec/hr = 36000 joules 1 kW-hr = 36000 joules = 3.6 MJ bottom line: 1 kW-hr = 3.6 MJ 7.28 / kW-h x 1 kW-hr / 3.6 MJ = 2 per MJ or 1 MJ / $0.02 or 50 MJ per dollar . Answered by billrussell42 - Tue Nov 18 22:06:46 2008 From Yahoo Answer Search: "Joules"  serpwidgets.com 305px x 640px | 56.30kB [source page] Parent Directory 05 Aug 2006 21 47 Joules 0103 01 jpg 05 Aug 2006 21 45 61k Joules 0103 02 jpg 05 Aug 2006 21 45 56k Joules 0103 03 jpg 05 Aug 2006 21 45 8k  tackroominc.com 437px x 386px | 31.70kB [source page] Joules Peachy Whisp Half Zip $79 00 $59 25 From Yahoo Image Search: "Joules"  familyjoules.com Steve ue, 14 Jul 2009 17:24:00 GM A "Coffee Shop" in Amsterdam. Courtesy of coworker Mike. There's a slight FAIL in the sign on the right. Are they saying children are allowed as long as they're not with their parents?  alestrel.blogspot.com Joules *Dances with Haddock* Taylor Sun, 05 Jul 2009 15:12:00 GM Square raked and tidied and the bramble roots dug up. Going to be a bit of a pain remortaring the wall, but it has to be done to make it safe. We've also made a start on removing the not-a-palm: the main stem had four 'heads' at the top ...  flickr.com (Pixteca MX ) Wed, 24 Jun 2009 16:02:05 GM Pixteca MX posted a photo: Cordon bleu a la . Joules. !!! Est delicieux!!! Y mas acompanado de mojitos, chapatitas y ensalada! From Google Blog Search: "Joules" |
