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A.E. asks

Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...

Gaston Fournier asks

NASA has recently detected the presence of ice on the moon. Since the moon is surrounded by void...

Kyra Nabeta asks

In dealing with bacterial resistance, should doctors use the strongest antibiotics now to kill off...

Hongyi Li asks

Does antimatter's gravity have the same properties ordinary matter?

Furqan from Lahore asks

Do bends in a wire affect its electrical resistance ?

Garry McKay from Melbourne asks

I've a question about solublity, water, and cyclohexanone. Water has a certain solubility in...

Joaquin Cornejo from Los Angeles asks

Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?

Intruder from Singapore asks

How does a lightstick work, and what are the chemicals involved?

George Donati from Andradas-MG- Brazil asks

When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...

David Critch asks

My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...

Mike Ochman from Whitby asks

Where on earth is the gas neon found? Is it common? Rare? In what form is it usually found (as a...

patric hedlund asks

According to my family, a comet streaked through the sky the morning one of my uncles was born. His...

Chris asks

Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...

Steven Hoaglund asks

Galileo said, "in a vacuum, all objects fall at the same speed." Well, I have an idea that might...

Ross Richardson from Battle Creek, MI asks

How long does it take for alcohol to be detected through the skin after your first drink? Is there...

Stephen Leece from London asks

I am currently researching how sugar (sucrose) reacts with various chemicals. I am particularly...

Peter Gensch from Auckland, New Zealand asks

Is there an effective and affordable way to kill weeds on an organic basis? (i.e. vinegar?)

Ethan Diener asks

If body temperature is 98.6 degrees, why does 98.6 degree water feel hot when you place it on your...

David from Ottawa asks

I was wondering how I could test for things like heavy metals. How can I do that without paying for...

Ron Belmont asks

How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which...

Karan Rana from Atlanta asks

I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...

Brooke from the Internet asks

How do you find the solubility of a substance?

Mouabbi Rami from Athens asks

Why do most industrial LASER diodes emit pulsing light beams and not continuous ones? And what is...

YIanni Mitropoulos from Melbourne asks

If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...

George Chronis from Toronto asks

I have a few questions regarding Space-Time that have always confused me. I would very much...

Morten Aasbak from Bergen, Norway asks

I came across a "water powered clock", and it can supposedly generate power from water alone. My...

Marlene Caissie asks

I heard there was a woman named Rosy involved in the discovery of the DNA double helix. Who was she...

Gregg Echols from Phoenix asks

What are the temperatures reached at the focused point of a magnifying glass, when using the sun as...

eddie poirier from Orange City, Florida asks

I have always heard that distilled water is a poor conductor of electricity. Is this true and if...

Harriet Quaide from Birmingham asks

Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...

jose from miramar asks

Does fabric softener affect drying time of towels?

Ryan from Maryland asks

I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over...

Benoît Mailhot asks

Are light and matter the same thing? Can you get matter from light?

Marin from the Internet asks

Is it possible to create plasma using two high voltage electrodes , cathode and anode. Would air...

bahar from iran asks

We want to know, when we burn NaCl, what happens to Cl?

Margaret Moore asks

Can you tell me what the exact pH of the acid in our stomach?

Pierre Charbonneau, Eng. from Jonquière, Quebec, Canada asks

Is there actually a strobe light on the International Space Station? I saw in the sky a sequence of...

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

Marie from Rochester asks

My whole family plays hockey. We have frequently discussed how long of a shift should be and with...