i have a project for school and i need to blow out a birthday candle and the mousetrap can only be the source of energy. and i really need help if u have ANY ideas please let me know!!!!\nIT NEEDS TO BE A METER(39.43in) AWAY !!!!!!!!!!
136327
Seriously, you are all thinking too hard. The answer is the easiest, and obvious one that your teacher is looking for. Trust me.\n\nHave the trap faced away from the candle. That is, that when it is sprung, the motion is away from the candle. Before setting the trap, tie one end of a 40in long piece of string to the arm, the other end to the candle. Then, set the trap and place it one meter away,(the string will now be tight). When the candle is lit, and the trap is sprung, it will jerk the candle away. The fast motion of the candle through the air will blow it out.\n\nSimple huh? Your teacher isn't looking for how fancy or inventive you can be, but how you can demonstrate simple efficiency. Or a lesson in common sense.
413920
Wow, we're going to need A LOT more info here. What shape is the candle, how tall is it, what is it's density?
246831
prooly need ifrared thingy\ntry a industrial magnet
89284
!WARNING!\nFirst before I even answer your question.  I just like to warn you that if your actually attempting a stunt like this be very careful.  Connecting 100 AA Batteries(1.25V) in series will produce 125 Volts.  Be very careful with it!\n\nAnswer:\nThe SI units of the electric field are volts per meter.\nThe equation for an electric field is: (E=V/r)\nWhere E=Electric Field, V=Voltage, r=distance from point.\nSo a higher electric field means two things: Higher voltage, or less distance. In order for you to get the highest voltage connect the batteries in series as follows:\n\nConnection: \nYou would need to connect the battery in series as follows to get the highest voltage. \n Bat1  Bat2  Bat3  Bat4  Bat5  Bat6      Bat100\n[- +]o[- +]o[- +]o[- +]o[- +]o[- +]o....[- +]o\n\n\nWhy:\nThe electric field is dependent on the voltage and distance. Increasing voltage will directly increase the electric field.  Decreasing distance will increase the electric field. Look at the equation above. E=V/r\n\nAnother way to think of it:\nThink of Voltage as pressure. And a ball as an point charge(electron).  Suppose you have a water hose and a ball.  You have to use the water hose to move the ball around.  If your too far away from the ball, the water will not reach the ball and the ball won't move.  The same thing happens in electric field.  The electric field is too far from the electron to make it move.  Now suppose you increase the pressure on the water hose.  Because of the increased pressure(Voltage) the water will shoot further and hit the ball, thus moving it.  If your very close to the ball you can use the water pressure(Voltage) to move the ball faster.
10912
here's what you need:\n\n1.18-gauge copper wire (smaller gauge will work too,2. but 18-gauge is stiffer)\n3.Wire clippers\n4.Steel paper clip (Some people find that a 2-inch 5.strip of zinc works better) \n6.Sheet of coarse sandpaper\n7.Lemon\n8.Help from an older friend or an adult\n\n\nhere's what you need to do:\n\n\nHave your older friend or an adult strip 2 inches of insulation off the copper wire. Clip the 2 inches of bare wire with the clippers.\n\nStraighten out the paper clip and cut about 2 inches of the straightened steel wire, or use a 2-inch piece or strip of zinc.\n\nUse sandpaper to smooth any rough spots on the ends of the wire and paper clip or piece of zinc.\n\nSqueeze the lemon gently with your hands. But don't rupture the lemon's skin. Rolling it on a table with a little pressure works great. \n \nPush the pieces of the paper clip and the wire into the lemon so they are as close together as you can get them without touching.\n\nMoisten your tongue with saliva. Touch the tip of your wet tongue to the free ends of the two wires.\n\nYou should be able to feel a slight tingle on the tip of your tongue and taste something metallic.\n\n\n\nwhat you will discover\n\nThe lemon battery is called a voltaic battery, which changes chemical energy into electrical energy.\n\nThe battery is made up of two different metals (the steel paper clip and the copper wire). These are called electrodes, which are the parts of a battery where electric current enters or leaves the battery. The electrodes are placed in a liquid containing an electrolyte, which is a solution that can conduct electricity.\n\nIn a solution of water and an electrolyte, like the acid in the lemon, an excess of electrons collects on one end of the electrodes. At the same time, electrons are lost from the other electrode.\n\nTouching the electrodes to your tongue closes the circuit and allows an small electric current to flow. A single lemon produces about 7/10 of a volt of electricity. If you connected two lemons together, you can power an inexpensive digital watch (uses about 1.5 volts). (Use a length of thin, flexible wire to connect the silver wire of one lemon to the copper wire of the other lemon. Then attach thin wires from the other two wires in the lemons to where a battery's positive and negative poles connect to power the watch.)\n\nThe tingle felt in your tongue and the metallic taste is due to the movement of electrons through the saliva on your tongue.\n\n\n--well, i just searched for it. hope i helped in a way ^_^\n\n-paul
590998
Try this link.  \n\nhttp://users.bigpond.net.au/mechtoys/mouse.html
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The classic experiment (18th century) was to feed a mouse kept in a sort of thermal bottle that contained some ice at a known temperature under it, measuring the additional ice melt caused by the long term presence of the mouse.\n\nAnother way to do likewise would be to:\n- keep one or more mice in a thermally insulated container (say, small terrarium fully insulated w/ styrofoam)\n- with air flowing through it at a known rate (say, fans into a main, air through a calibrated delta-P engpass)\n- two thermocouples at intake and outtake\n- a recorder integrating the temperature delta times air flow over time, giving the thermal energy output\n- supply water at the same temperature as the air intake\n- subtract the missing water's latent heat (specific latent heat x evaporative loss of water, counting water input, dejections etc.).\n\nPiece of cake!\n\nEasier yet, do ANY kind of scientific measurement, throw away all the data, publish made up data you think you may have been reading into the Holy Bible, or you believe God told you directly.\n\nThis is how the White House does science these days, and if it is so, then God wants that, and it must therefore be right.\n\nIf you disagree, you are a kneejerk liberal, or a terrorist, you are a security risk, you can be spied upon, and if you are of middle eastern origin you can be flown to other authoritarian countries to be tortured.\n\nSo be very careful.
38121
got a dandy.....even though  it  seems  difficult   youll  break through  and  find  out  you can  almost  measure  anything....try  this  because  i dont  know  what  type  of  equipment  you have....in  search  bar  go.....vernier  read .. hit search..the  NTNU site java  is  excellentyou you can  even  practice  measuring  on  line.....reading  a  vernier  is  good too.....check  them  all
210111
Don't try this one yourself! Use a pet rat or something!\n...\nActually, don't! Or i'll get hunted by Animal Rights Activists!!\n\nAll you need is a battery, two wires and a large capacitor.\nCharge the capacitor by connecting the battery across it with the two wires.\nThen disconnect the wires.\nThe capacitor has now been charged - if you put your hands across the terminals, you'll get a nasty shock.
461149
A typical wirless card puts out about 50 mW (50 thousandths of a Watt) of RF radiation.  At one meter away, that power drops to about 20 pico Watts (or 20 billionths of a Watt).  Bottom line, there's very little power right next to the thing and there is essentially no RF power 36 inches away.  Relax.
422830
Man did u luck out running into me, go to www.sciplus.com "American science and surplus", all sorts of abandon science projects, factory over runs, cancelled government orders, motors, solar cells, weird stuff in the science dept, it's a mad doctors dream come true, CHEAP TOO ! check it out, you'll find lots of "COOL" stuff, that has many uses ! I did a hydro-electric demonstration of power application, that was so small, I could do it in a lab sink, E-mail me if you want an "A", it's an easy experiment, inexpensive, looks very sophisticated, yet simply displays the hydro-electric properties of producing low cost, hydro-electric power, using no battery's or electric for assistance, just water, so it's completely SAFE ! works on displaying milli-amps of D.C. power, yet you are still producing (at a very low voltage) power.
380041
Check and/or change the batteries.\n\nMake sure there are no obstructions between the mouse and the sensor connected to your computer.  You should be able to draw a straight line between the two without having to pass through any desk, books, monitors, dead cats, etc.
655295
This is called 'candling' and is done using a cone shaped candle and a protective shield. \nThere are special candles, not just any will work.\nThe candle is placed in the ear with a shield, or pan, between candle and ear.  It burns for about 10 minutes and is supposed to draw toxins and extra wax out.
386980
Popcorn ball. . . . \n\nGoogle search:  volume sphere (should have used "volume sphere," but it turned out not to matter)\n\nhttp://www.aaamath.com/geo79-volume-sphere.html\n\n4/3 (pi) r^3\n\n4/3 times pi times (6 to the 3rd power) \n\nequals 4/3 times pi times 216. . . and work from there.\n\nGoogle search:  volume cylinder\n\nhttp://www.321know.com/exp79_x5.htm\n\n(area of the base) * height =(pi r squared times height)\n\nPi times (16 squared) times 275. . . work from there.
532898
oooo this is really fun\nget a match or lighter, and some hairspray (or other flammable spray)  light the match/lighter and spay the hairspray/other liquid toward the flame.  the flame will flare off.\nanother great way is to light a candle (the tall kind).  then turn around and put your rear end behind the candle and fart.  the gas in farts are flammable.  another way is to hold the lighter/match to your butt and fart.\nhope i helped you\nbye
181001
You can find a bunch of ways to do it on this site (URL below)\n\nIn particular, take a look at the last one:\nWith each click of the mouse a flurry of fireworks explodes from that spot on the page. You may also use your own images if you want. Great!
428189
OK I'm cheating - I put this answer up a little while ago.\n\nA quick and dirty idea for a physics project would be one based on electromagnetism. Without knowing what grade you're targeting, a simple one that has a fair amount of pizzazz is to build a gauss rifle. Checkout http://sci-toys.com/scitoys/scitoys/magnets/gauss.html\n\nThe sci-toys site has some other pretty cool stuff that you might find useful as well.\n\nFor a more advanced example, you can make a small rail gun that applies similar principles but can have a much larger kick. Just do a search on "rail gun experiment".\n\nEnjoy!!