Could you please tell me what is inertia? Will it bring us more good than bad in our life? Will you...
from San Diego
How is the spin imparted to a golf ball during the collision with a driver determined? The paradox...
Given that the Earth's magnetosphere is what protects us and all life on Earth from the deadly...
I have seen in a TV show that by a very high magnetic force field even non-magnetic substances...
Why is the sky blue?
Is snow a conductor or an insulator?
In winter in very cold countries like Canada and Finland, most rivers, lakes and ponds freeze over....
What's smaller, a quark or a neutrino?
I am a novice and I am looking to buy a telescope for around $350. Which one would be better for...
from Nottingham, England
Is gravity lumpy? If you were standing in a valley, then on a mountain, would your weight be less...
A. S. Kaire
If the earth were suddenly stopped in its orbit, how long would it take for it to fall into the sun?
If one were to drop an item on the surface of the sun, assuming the object could free fall to the...
Can you help me with the physics of an amusement park ride called the Magic Carpet? The Magic...
from Scotch Lake, Cape Breton, N.S.
If nothing can escape from a black hole, how come we are here? The big bang must have...
from Salem, VA
I am doing a research project on the strength of different batteries. Is there a cheap way to test...
My brother and I have a very important bet and it is about the following: If you remove the...
I was taught at school that the building blocks of all matter were quarks, yet a neutrino is at...
from Ottawa, Ontario
I have been teaching high school science for 16 years and I am interested in knowing what you feel...
Is my counting right?: There are 76 elementary particles in the standard model:
6 leptons + 6...
from the Internet
Why is a magnet classified as dangerous goods when shipping by air?
from Burlington, Ontario
My roommate insists that the first day of Spring falls on March 21st every year, yet on the...
from Staten Island
If mini black holes would be produced at Cern (LHC) and in ultrahigh energy cosmic rays hitting the...
Is it possible to focus gamma rays into one beam and then reflect it off an orbiting mirror onto a...
Are there any planned future deep space explorations planned say in the next 5 or so years. Surely...
Yesterday I was watching "Hercules" with my little sister and now I wonder: Have the planets ever...
HELLO I have A VERY IMPORTANT EMAIL. THIS IS STRICTLY CONFEDENTIAL AND CONCERNS THE ENTIRE HISTORY...
Could you explain the idea that gravity could be thought of a depression or well, much like when a...
I'm wondering if I have a tube filled with argon gas, or some other inert gas, and heat up a...
C. Erik Grisham
Is there an exact relationship between Gravitational forces and Centrifugal forces? If so, is...
If you had a seamless sealed box which was lined with a 100% reflective material, and somehow...
With all that the U.S. military is doing by developing laser weapons as an anti-missile defense, I...
What are the causes of Northern Lights? Do they have any relation to the green-house gasses in the...
If you could dig a hole from one side of the earth to the other passing though the core, what would...
In energy transformations, even on the subatomic level, is some energy always lost as thermal...
Richard L. Gibbens
My question concerns the latest news about the Cosmological Constant. Has it now been established...
from Staten Island
If we assume that Whitten's new Twistor String Theory is correct, with no real extra demensions,...
How many times a year can you see the eclipse of the moon???
from Oak Ridge
I would like to know what causes inverted icicles. I have a photo I've just taken if you need to...
Today a girl in my class asked the question "Can you save yourself from an elevator falling 10...
We know that cosmic microwave background is 2.725 kelvin. We know universe was some 13Billion years...
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