Number of results: 63,716
If the absolute temperature of a gas is 600K, the temperature in degrees Celsius is? C= K-273 327 C what is the first step to designing an experiment what is a mole in measurement like mole mass. please help me get info. explin the relationship between velocity and ...
Thursday, June 16, 2005 at 4:39pm by Julio Paz
Forgot my book, need science help!!
Please help me I have a whole section to do over the weekend and I forgot my book! Please help!! You'll need to post a question in order for a science teacher to know what kind of help you need. Biology? Chemistry? What? And what is/are the question(s)? Just remember -- the ...
Saturday, August 20, 2005 at 10:37am by Linz
Intro to Physical Science
Define physical science Andrew: I went to www.dictionary.com and typed in physical science. The following is what it returned.I hope this helps. physical science 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and ...
Saturday, September 9, 2006 at 3:31pm by andrew
Please help me on my science homework....Motor A uses 1000 joules of energy to move 200 newtons of force a distance of 3 meters. Motor B uses 1200 joules of energy to do the same job. What is the difference in percent efficiency between Motor A and Motor B? Percent efficiency...
Tuesday, November 7, 2006 at 4:10pm by Jenny
What means Cells in Science? It depends on the context: In electricity, or chemistry, cells are sources of electrical energy. In life science, cells are the basic unit of construction for animal or plant life.
Sunday, December 31, 2006 at 3:20pm by Urvashi
Science help (Plz help!!! 20-point quiz tomorrow!!
I have three questions that I could not find in my book, even though they are probably there. Plz help, I have to do well on this quiz, or I'm dead!!! 1) What two forces are at work in a nebula that is not creating a star? 2)What happens to the rocks in the center of a ...
Monday, January 29, 2007 at 11:00pm by Emily
Science help please...
Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous stare is characteristic of the element? Ive read and researched Quantum physics for over a week now and i still dont understand this ...
Monday, March 5, 2007 at 1:12pm by Jaime
which would be the most likely forms that you would consider using within the next year? What personal advantages or disadvantages would prompt your decision? Thank you for using the Jiskha Homework Help Forum BUT your question is unclear. When you refer to "forms" to what ...
Tuesday, March 6, 2007 at 3:25pm by Jaan
How does an electrical current in a circuit produce thermal, sound, and magnetic energy? The electrical current flows thru devices that convert the electrical energy to mechanical or electomagnetic waves. i have a science project do tommorrow but i need some pictures of the ...
Thursday, March 29, 2007 at 7:58pm by SasukeUchihaFanatic
i need to do a graphic or table for my science project.The project is Does water with salt boil faster than plain water? Thank you for using the Jiskha Homework Help Forum. Here are some sites on boiling water: 1. http://ippex.pppl.gov/interactive/energy/boilwater.html 2. (...
Sunday, April 8, 2007 at 12:56am by Jeika Campos
How is fresh water used in industry? a.in manufacturing processes b.in the disposal of waste products c.to generate power d.all of the above i picked b. I'm no expert on environmental science, but wouldn't it be (d)? I thought that because: a. People use water in manufacturing...
Friday, April 20, 2007 at 6:43pm by Mack
I need to write a paper on why saving energy would benefit us. The paper will be sent to Congress so I need really good reasons! Any websites that can help?
Saturday, March 6, 2010 at 11:32am by Sam
Since this is not my area of expertise, I searched Google under the key words "benefits saving energy" to get this: http://www.google.com/search?client=safari&rls=en&q=benefits+saving+energy&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more quickly...
Saturday, March 6, 2010 at 11:32am by PsyDAG
What is chemical potential energy?? :)
Sunday, March 28, 2010 at 4:57pm by poppy
science (energy) really needs help!!!
It is the energy which CAN be released in a given reaction. As in a battery.
Sunday, March 28, 2010 at 5:14pm by bobpursley
science (energy) really needs help!!!
What is chemical potential energy?? :) please help!!!!!!!!!!!!!!!!!!!!!!!!
Sunday, March 28, 2010 at 5:14pm by PoppY!!!!!!!!!!!!!!!!!!!!
It's the energy stored in chemicals. It is released when the chemicals react. For example, sodium hydroxide + hydrochloric acid produces sodium chloride + water + heat. The heat is the energy released when the sodium hydroxide and hydrochloric acid neutralize each other. This ...
Sunday, March 28, 2010 at 4:57pm by DrBob222
Ok i have done 2 experiments (See below) the question i need help with is i need to explain the difference for the two combustions and i just dont know, please help me and thankyou for your help. The Combustion Of Marshmallows Aim To investigate how much energy is transferred ...
Friday, December 17, 2010 at 8:19am by Paul
I have a couple of comments: Are you sure of the energy content of the marshmellow? You just stated it as a fact. I would have given students a value of about 4.2. Now, you caculations. On the marshmellow, heat= 20g*2C*4.2J/goC= 151J Where did you get 151 thousand? You need to...
Friday, December 17, 2010 at 8:19am by bobpursley
science energy conversions
List the energy conversions in these situations. A drum set causes many dishes to rattle. Temperature differences cause wind.
Sunday, May 19, 2013 at 9:58pm by Anonymous