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What is air pressure inside rubber birthday balloon? Consider a normal rubber balloon inflated to a reasonable size; where the initial resistance of the rubber to stretching is ... Submitted by rabidrobot 1 year ago 8 answers viewed 3788 times Last answer posted 5 months ago by rebus

V=IR and basic electricity Most of us have learned in high school (Who ever majored physics) that applying a resistor with a certain voltage will result in a ... Submitted by Ronen_sagy 1 year ago 2 answers viewed 3618 times Last answer posted 7 months ago by lavaidya

How does a gramophone work? How does a gramophone work? specifically, how are holes on a platform transformed into sound and music? Submitted by mentat 2 years ago 4 answers viewed 3499 times Last answer posted 2 years ago by orenlv

Density of water and ice Why does water expand when it freezes into ice? (Most other substances become more dense when they turn from liquid to solid.) Submitted by SundanceFan 1 year ago 4 answers viewed 3286 times Last answer posted 1 year ago by SundanceFan

The Math behind cooling down coffee A friend of mine told me that coffee without milk cools down much faster than coffee with milk because the function of the ... Submitted by george 2 years ago 11 answers viewed 3228 times Last answer posted 9 months ago by ejlanigan

Why do I get a small electric shock when i get out ... why do I get a small electric shock when i get out from my car when the weather is dry and cold and i touch a part of the car? how ... Submitted by maisels 2 years ago 3 answers viewed 3136 times Last answer posted 2 years ago by yoavdothan

Refrigerator not working My refrigerator has stoped working last night. the light is on when the door is open, but the engine makes no sound of working ... Submitted by lisa 2 years ago 2 answers viewed 2447 times Last answer posted 1 year ago by Gadgeteer

the fastest man made object What is the fastest man made object and how close is it to the speed of light? Submitted by billyboy 1 year ago 2 answers viewed 1520 times Last answer posted 9 months ago by slimered

Types of atoms how many types of atoms are there? Submitted by moranh 1 year ago 4 answers viewed 1503 times Last answer posted 2 months ago by gators

Travel faster than the speed of light... What do you think being able to to travel faster than the speed of light will do for us? Should we be excited about this. Check ... Submitted by GabeCohen 1 year ago 4 answers viewed 1373 times Last answer posted 1 year ago by ashms84.nm

How much food does a person consume from birth to death? How much food does a average person consume from birth to death? Submitted by Gustur 2 years ago 3 answers viewed 1371 times Last answer posted 1 year ago by pie

Charging car battery with cables What is the proper way to charge car battery by cables- First attach the cables to the source battery (engine running), or to the ... Submitted by lisa 2 years ago 1 answer viewed 1330 times Last answer posted 2 years ago by maksiml

Air speed and ground speed what is the difference between Aircraft's air speed and ground speed, and when does each category is used? Submitted by slurp 2 years ago 1 answer viewed 1329 times Last answer posted 2 years ago by atyachin

Jump starting a dead car I finished reading an article about start jumping a dead car, and wondered why do they instruct you to plug the "minus" side on ... Submitted by Anna 2 years ago 2 answers viewed 1215 times Last answer posted 2 years ago by Anna

Quantum theroy Vs. Physics? I've seen a couple of movies read a couple of articles about it but I was intersted in knowing if the "quantum theory " is ... Submitted by Deni 2 years ago 6 answers viewed 1214 times Last answer posted 2 years ago by Deni

Halogen lamp with a dimmer One of the lamps in my house is activated by a dimmer, An halogen lamp. Sometimes when turning the dimmer on it takes about a ... Submitted by Anna 2 years ago 1 answer viewed 1181 times Last answer posted 2 years ago by eniv4

Did the streon company actually built a perpetual motion machine. The streon company claims it as done the impossible , they broke the laws of physics and built a perpetual motion machine. can ... Submitted by bergerui 2 years ago 3 answers viewed 1162 times Last answer posted 3 months ago by drabsv

Vortices direction in bothe north and south hemispheres is it true that sink vortices at the north hemisphere go the oposite direction to that of those in the south hemisphere? Submitted by haimt 2 years ago 5 answers viewed 1083 times Last answer posted 10 months ago by asaraink

Where can I find Albert Einstein philosophical views on god ? Where can I find Albert Einstein philosophical views on god ? Submitted by doglove 2 years ago 4 answers viewed 1005 times Last answer posted 2 years ago by revart

Looking for an explanation on static electricity link to weather. Why is it that on certain days I suffer from static electricity? Someone told me it has something to do with the weather. Submitted by Alfi 2 years ago 5 answers viewed 1003 times Last answer posted 5 months ago by pavankumar

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