Electrical distribution / Power systems questions!?
Hello everyone, I’m studying electricity in school, but I still don’t have a firm grasp on electrical power systems and was hoping for some help. I have four main questions. Anyone working in power systems, please share your knowledge! 1. How do each of the various generation schemes (coal / steam turbine, wind farm, nuclear […]
question about electric / alternative fuel based cars?
Will these cars like hydrogen, electric, air, and any other alternative based cars ever be able to be as god as our older cars. By being as good i mean: powerful engines, long trips, and affordable? Do you see this happening in the next 10years?
Few questions on electricity (Please check my answers)?
1. How is electricity for houses generated at the power plant? My answer: At thermal power stations where heated water turns into steam which rotates a steam turbine, driving the electrical generator. 2. How is that electricity transferred? How can you estimate the voltage of a power line by looking at it? My answer: Through […]
hello.. i have one question about wind energy system including types of wind turbine.?
i just want to know about what types of rotor blade wind turbine that is suitable for low wind speed region where the monthly mean wind speed is about 1.5-2m/s and the maximum wind speed is about 8m/s. can u give me some suggestion how to choose the best rotor blade of wind turbine that […]
Questions On Energy Conservation In The Homes?
How Can We Build New Homes That Use As Little Energy As Possible? What Modifications Can We Make To Existing Homes To Save Energy And Money? Does Energy Conservation In The Home Mean A Lower Quality Of Life?
I have a lot of questions about geothermal energy.?
How do we harness geothermal energy? What is the current supply left for geothermal energy?
AP Chem free response question about electrolytic cell?(please help)?
In an electrolytic cell, a current of .250 ampere is passed through a solution of a chloride of iron, producing Fe(s) and Cl2(g). 1) Write the equation for the half reaction that occurs at the anode? 2) Write the balanced equation for the overall reaction that occurs in the cell? THANKS
Biofuel question – which of these has best ROI?
Biofuel made from which, algae or switchgrass, has best Return On Investment?
Grand Gulf – Norris McDonald – Question to NRC re COL
Feb 21, 2008 Open House & Public Meeting for the Nuclear Regulatory Commission and the public to discuss the safety and environmental review of the anticipated Entergy application for a combined licene for a new nuclear unit at the Grand Gulf Nuclear Station. A key topic to be discussed is how and when the public […]
power plant question?
if power plants burn coal to create steam that turns generators to make electricity, why can’t they boil water on huge heating grids? that makes steam too.
Physics Question on Wind turbine?
The power generated by a wind turbine is given by: P =1/2epAv^3 Where e is the turbine efficiency, p is the density of air, A is the area spanned by the wind turbine and v is the wind speed. Assume that we want to buy some number of wind turbines with e = 1/2 and […]
Science question please help 10points and best answer ?
All of the following power plants are considered thermal power plants because they heat the steam that works the generators, except a.nuclear power plants b.coal burning power plants c.fossil fuel power plants d.hydroelectric power plants
If a question says electrochemical cell, how do you know if the two half rxns are for electrolytic or galvanic
So if they give you two half rxn, and it says they are an electrochemical cell, how do you know if it is electrolytic (therefore -E total), or should be the opposite (+) E total?
Questions re: batteries actually being used for electric and hybrid cars: Please answer as many as you can.?
1) What types of batteries are being used? 2) What are their anticipated useful lives? (Each type) 3) How is each type recycled or how is disposal accomplished after their useful life has expired?
solar power question?
so solar panals are only about 4% efficient.. has anybody built a solar steam generator? and if so how efficient/feasable is it?
wind turbine question?
I am watching some videos on windturbines on you tube. Some of the videos say its generating volts, some say amps. I understand to get watts you do amps x volts. But if wind turbine is generating 30 volts how do you tell how many amps its generating? Can someone provide a website with same […]
Electrolytic cell question !!! help if u can?
Question 20 5 L volumes of 1.0 M KNO3(aq), 1.0 M AgNO3(aq) and 1.0 M Cu(NO3)2(aq) are placed in three separate electrolytic cells using platinum electrodes. Over a period of 30 minutes, 96 500 coulombs of electric charge are passed through each solution. Which of the following alternatives correctly indicates the amount, in mole, of […]
Gibbs Free Energy Positive In Electrolytic Cell Verses Galvanic. Quick Question?
Greetings, I have written down in my notes that Delta G (Gibbs free energy) is Positive in an electrolytic cell, whereas it is negative in a galvanic cell. Is this mostly true in most cases? What confuses me is that there is an equation Delta G =nFE(cell) that determines the spontaneously of a reaction in […]
PLEASE HELP WITH THIS QUESTION FOR 10 POINTS!!!!!!!!?
NASA has developed Deep-Space 1 (DS-1), a spacecraft that is scheduled to rendezvous with the asteroid named 1992 KD (which orbits the sun millions of miles from the earth). The propulsion system of DS-1 works by ejecting high-speed argon ions out the rear of the engine. The engine slowly increases the velocity of DS-1 by […]
Can anyone help with these physics questions dealing with acceleration?
1. At a given instant of time, a car and a truck are traveling side by side in adjacent lanes of a highway. The car has a greater velocity than the truck. Does the car necessarily have a greater acceleration? Explain. 2.NASA has developed Deep-Space 1 (DS-1), a spacecraft that is scheduled to rendezvous with […]