If a cat always lands on it’s feet, and buttered bread always lands butter down when dropped; if I strap a piece of buttered bread to the back of a cat and drop it, will the cat spin rapidly six inches from the floor and give me a free source of energy???
Posted in Solar Power
Tagged back, bread, butter, cat, energy, floor, free source, piece, six inches, source, source of energy, strap
The table in the back of my wife’s chemistry textbook tabulates values of the standard enthalpy of formation delta-Hf0, the standard entropy S0, and the standard free energy of formation delta-Gf0, for a wide variety of elements and compounds, all evaluated at 25C. As I understand it, they should be connected by the relationship
delta-Gf0 = delta-Hf0 – T*S0
They aren’t. For instance, for liquid water, it gave
delta-Hf0 = -286 kJ/mole
S0 = 69.96 J/(mole K)
delta-Gf0 = -237.2 kJ/mole
25C corresponds to T = 298.16 K , so by my calculations detla-Gf0 should be
-286 kJ/mole – 298.16 K * (69.96 J/(mole K) / 1000 (kJ/J)) = -307 kJ/mole
None of the entries in the table work out as I expected, which rules out a typo. I’ve checked with other sources, and they all agree tolerably well with the values tabulated in this textbook. What am I misunderstanding?
I want to make a very small wind turbine in the back garden, to get enough energy to power a small light bulb ( any type ). I was thinking about buying some neodyniaum magnets, and i have some insulated copper wire, and im willing to put some work into making a little turbine. Can anyone tell me if im on the right track? If so what is a reason amount of electricity to expect to harness, i intend to store it in a battery. Or is what i want to much?
Posted in Water Power
Tagged back, bulb, copper wire, electric generator, electricity, energy, garden, generator, home, light bulb, magnets, neodyniaum, small wind turbine, turbine, type, wind
Yeah…So I plan on living in my van during college. Its a 1993 gmc Vandura 2500 the back is aprox 6 by 9.5 by 4.5. Luckily, I have about $3,000 to invest into it (aside from appliances), so it wont be so bad. I’ve been planning this since I was in 7th grade, however I still have a few issues.
Most importantly, powering the appliances. solar panels would cost too much…so is there any way to power batteries off of the gas engine, and use them during the night? This is a list of the appliances I will use, and approx how long during each DAY….yes, this is quite a bit of power…which is why I also wonder if hooking up several generators (making sure of theft-proofness, and safety w/fumes) would be an option
20″ tv +satellite equipment 3 hrs/day
Laptop 5 hrs/day
3 15 watt lights 10hrs/day
1000 watt microwave .25 hrs/day
surround sound/stereo equip 6 hrs/day
also, parking and showering are taken care of. I have access to a 5 acre parcel where I am legally allowed to park. to give you an idea, the school is www.adams.edu and the area is www.colomtland.com
I cant seem to figure out how to reply to people on here, so I guess I will add this all as a detail. I have considered a 5 by 8 or 6 by 10 travel trailer, however that is too much space…trust me, that idea has long crossed my mind. I will be able to leave the large generator equipment behind while using the van to go places, so bulkiness is not an issue as it will be contained outside the vehicle. Also, the area where I will be is definately away from people: the place is called the San Luis Valley…its about as big as massachutes and not even 50,000 people call it home. neighbors usually arent any closer than 10 acres to you
hehe, and one more thing…I dont think I’ve ever heard someone call living in a car cute. I’m just trying to make it a more comfortable experience
to the one who mentioned the warm climate… actually, it gets quite cold out there, however, It wouldnt be the first time I have slept with no heat in near 0 weather (the year before last, I went through an entire Michigan winter like that). It doesnt get above 90 in the summer on the hottest day, so thats def not an issue since I like it around 60 inside, which is what I will get during the night when I’m sleeping.
I’ve been planning the inside ideas for quite a while. The van width fits the length of a regular bed perfectly, and considering that it is not illegal to make the rear windows opaque, privacy wont be a huge issue either. I also plan on replacing the 3 large windows with ones that open more. I’ve also come up with several color schemes for the interior fabric and carpet…thanks for the positive advice; and realising that it is NOT impossible to save $5,000 a year on housing AND enjoy it…!
Posted in Wind Power
Tagged appliances, aprox, back, college, gmc, gmc vandura, gmc vandura 2500, grade, Luckily, prep, Van, vandura, wont
I had to unplug the filter so I could move the tank now it won’t restart again. It’s not a simple matter of pouring the water into the back because I’ve tried that. It’s not the power source because the heather and light source both worked plugged into that same outlet. It’s like the motor has died by my unplugging it. I am taking it back to the petstore tommorrow for a replacement but until then I’d like to know how long can fish live without a filter?
I have a 20 gallon tank with approximately 15 guppies (a few large ones, but more middle sized ones), a few live plants, and some snails in it. If it matters any…prior to my unplugging the filter the ammonia was a bit high (not at a toxic level but just a bit high) and the pH was fine.
Thanks for any help!
If I had the time to go to WalMart I’d just stop at the petstore which is closer 
Without any filter of any kind how long can they live? Am I going to wake up tommorrow morning with dead fish lining the bottom of the tank?
And the petstore manager already said to just bring it in for a new one…that won’t be a problem.
It is dead. It does not need to be restarted by pouring water in it (tried, doesn’t do anything) and the intake is open and not plugged. No matter…it is being returned tommorrow for a new one. My question is will the fish live until tommorrow evening when I get the new filter?
Although I appreciate all the suggestions on the actual filter and fixing it that has nothing to do with my question. I don’t honestly care what the problem is with the filter…it isn’t working…there is nothing short of opening the actual motor box (which would void the warranty) that I can do to fix it. It is being returned. Now if anyone can actually answer my question (other than the one girl that did, THANKS! lol) that would be greatly appreciated.
Posted in 12
Tagged aquarium, aquarium filter, back, FIlter, heather, light source, Matter, power, power source, simple matter, source, Star, tank, tommorrow, water
My Solar Power Back Up Power System For House & Shop OFF GRID ! Thanks To www.altestore.com and thanks to www.ebatteriestogo.com And also for Nice Honda generator from www.taylor-forbes.com They Are Really Helpful I bought All My stuff There ! My System includes 2 135 watt Kyocera panel at 270 watts Plus Midnite Solar PV Combiner Box For Panels Also A Mini 250 Amp midnite solar disconnect Box & A Morningstar pro star 30 amp Charge Controller & a Magna sine Magnum energy 2000 Watt pure Sine Wave Inverter With Automatic Charge & Generator To Charge Batteries I have AGM Batteries 27 series For or of them in Paralell which equals to 270 AMP Hours Each of Them are 90 amp hours Deep Cycle Also Thanks To Taylor Forbes Equipment For my Honda EU2000 I Generator To Charge My battery Bank At night or for Back up when not Enough Sun I can Run All our Pleasure items in our 1500 sqft House Except Heat Pump & Hot Water But I have Propane Heat For Winter & gas Range To heat Hot Water & Ceiling Fan & Widow That open For AC during Hurricane Outages in Summer or Fall Thanks For Watching KVUSMC
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Posted in free energy
Tagged back, bendini, DYI, electronics, emergency, emf, energizers, energy, enviromental, free, gadget, gas, help, motor, power, rush, supply