Archive for April, 2009

What is the most practical way to power operational amplifiers?

April 29th, 2009

We've been learning about op-amp circuits, and in the lab we power them with a power supply that has a range of 0-20 V, with two sources so that both polarities are available (we generally use +/- 12 volts). Obviously, this isn't very practical for most applications. Is there a way to power op-amp circuits [...]

Have you ever noticed that energy and matter act a lot like water?

April 29th, 2009

I am truly fascinated with the whole 'space/time continuum' and the way it all fits together. Have you ever noticed that energy and matter act a lot like water? The way that water swirls down a drain is the same as how all matter swirls down into a black hole… the way water moves over [...]

What impact does solar energy have on the politics?

April 29th, 2009

I am writing a literature review essay..and i have to discuss about the political impact of solar energy..can anyone give me some advices or examples for what i can do about this topic. One of the issues the US presidential candidates are tackling is oil dependence, terrorist and concerns about global warming. Solar energy will [...]

How many solar panels do I need to run a 1500w ceramic heater?

April 29th, 2009

I want to heat a room that is 20″ by 16 “. I have a 1500w ceramic heater and a 12v battery. How many solar panels would i need to heat the room? and what size panels fred k is right – far too many. and you probably need to buy an inverter too – [...]

What is the best online source for renewable energy news?

April 29th, 2009

I am looking for an educational online website for reliable renewable energy news and industry information.. I'd appreciate it, thanks! I have a good one for you, try http://www.renewable-energy-news.info/ for information along those lines. They seem to be getting into biofuel, tidal power, and other "emerging" green energy technologies. powered by Yahoo Answers addthis_url = [...]

What is an Alternative Energy that could be used for Aluminum Production?

April 29th, 2009

Aluminium production currently releases a massive amount of greenhouse gases in to the atmosphere. Does anyone think there is an Alternative Energy source the Aluminum Industry could use to prevent the amount of Greenhouse Gases they are currently releasing? Alternative fuels, also known as non-conventional fuels, are any materials or substances that can be used [...]

What kind of power cables can be plugged into a car?

April 21st, 2009

I recently got a laptop and will soon be going on a long trip. Are there any kind of power cables that can be plugged into the lighter/power source? If there are any, where could I be able to find such cables? yes its called a dc/ac converter and you can get them just about [...]

Who actually listens to what the Right Wing NeoCon Nut, Candy Crowley, has to say today?

April 21st, 2009

Didn't she sing high praise for Bush's faith during the 2004 presidential election? And didn't she sing high praises of Bush's Iraq plan in 2004? And how she had praised Cheney with "But driven can come out harsh, and Cheney has become a lightning rod for critics of everything from energy policy to Iraq. The [...]

I am considering a solar panels. How can I tell if my area gets enough solar energy a year to be worthwhile?

April 21st, 2009

I want to know how I can determine my area's (Rochester NY) yearly solar energy output to see if it would make economic sense to install solar panels. Any websites or resources where I can look? If you are looking for the cheapest electrical power available solar panels are not going to be what you [...]

How much does it cost to install solar panels at home?

April 21st, 2009

My family is really "Green" when it comes to our lifestyle. I just need to know how much it would cost for solar panels to provide our electricity. How many would one house need? Do they charge by the panel? It is not that simple. You need panels, batteries to store the energy, an inverter. [...]