Recent content by ForumFire

somthing like that, except its not ment for easy transportaition, but really just a fun toy. If the shoes pushed someone 80kg up 0.33m, how poerful would the push off the ground have to be?

how powerful would "super jump shoes" have to be? I was just wondering, if there were "super jump shoes", that would hit on the ground and would propell you upwards, how powerful would those shoes have to be? I was hoping that you could use poweful magnets to do it. If you put like ends of...

I was just wondering, that if you attached a fan in the front of an airplane wing, would it fly? If so, then how powerful would the fan need to be for a small model airplane, say 0.4m and 1kg, to fly/hover? Or if i made wearable wings, and i put them on, how powerful then would the fan have to...

I was just wondering becasue every example in my book had oxygen in it, but it didn't say anything about it.

I was wondering if it was possible to put water in a tube, and either add air pressure or put it in a vacuum and changee it's phase change? I herd at wikipediea that you can change the state of matter somthing is in by either changing the tempature or pressure that it's in.

I am trying to do the elphant's toothpaste experiment, exepct i can't fint where to but potasium iodine at! Alls that i can find on the web are pills of it to protect your thyroid.

I was wondering also if you put a magnet above it, then lifted the magnet up,would the nitrogen and salt come up too?

"elephant toothpaste experiment" cannon? I saw a video of an experiment called "elephant toothpaste" on youtube, where a guy put hydrogen peroxide and potassium iodine in a graduated cylinder, and it all foamed up, and went out of the graduated cylinder. If you put the chemicals in a pipe with...

I just needed to know for my work-in-progress hovershoes.

Whats the chemical composition of oak wood? I want to know because I am trying to cut wood by changing the chemical compound of the places that i want to cut it at by putting a chemical that would bond to the wood, and the new compund of my chemical and wood would be a gas. I don't know if...

i found this link http://www.instructables.com/id/MAKE-A-HIGH-VOLTAGE-SUPPLY-IN-5-MINUTES/" i don't know what the voltage or wattage is, but there might be other things on the website that can help you and say what the voltage and wattage is

There are many videos on youtube where people put grapes in the microwave and it turned the grapes into plasma. There are some other videos on youtube where someone made a plasma thruster(http://www.youtube.com/watch?v=s_wwEKp6SGk"), and in the discription said that it needed a magnetic field...

ty, but i got one more question: how much more lift does the airplane get for how much faster the air travels across the top side of the wing than the bottom side? e.g. the top side is 10 in squared and the bottom is 5 inches squared; how much more pressure is on the bottom than the top?

i am trying to make a giant model airplane, about 0.5 meters wide, 0.2 meters tall and 1 meters long. About 40 pounds

I don't know if this the right spot to post this; I hope someone will help me with airplane wings. I have no idea how they work, how big they should be, or anything. Also if there is a formula to find how much thrust you need for something with wings on it to take off, or to find how big the...