There has been much mention of antimatter, such as antineutrinos. I was wondering what exactly...
A. S. Kaire
If the earth were suddenly stopped in its orbit, how long would it take for it to fall into the sun?
from Ottawa, Ontario
I have been teaching high school science for 16 years and I am interested in knowing what you feel...
C. Erik Grisham
Is there an exact relationship between Gravitational forces and Centrifugal forces? If so, is...
If you could dig a hole from one side of the earth to the other passing though the core, what would...
Karl-Alexander Berg Brisebois
Conservation of momentum can explain the exchange of a virtual photon between two electrons and the...
Supposedly in classical electromagnetism an accelerating charge radiates. If so, why? If so, then...
from Hong Kong
1) Which of the following two options is more widely accepted by the scientific community? a)...
Lee Ming Fei
Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...
Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...
I've got a question about light. As I understand it, light is a particular form of energy--in order...
from Ajax, Ontario
If mass can be converted to energy by using E=mc2, how can energy be converted to mass?
How does mass shifting affect Earth's rotation? Could melting of polar icecaps cause a change in...
from Dallas, Texas
If you shine a light through a glass of water, the light slows down. What makes it speed up again...
Galileo said, "in a vacuum, all objects fall at the same speed." Well, I have an idea that might...
I have been reading Feynman and what he says seems to make sense to me, in particular:photons are...
I recently read a book on the big bang, and it said that protons and neutrons are made up of 3...
When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what...
from Lincolnshire, UK
I am currently researching EMP for a essay at my college. My essay is looking at possible...
from the Internet
What exactly are Proton Spin Numbers, and how can you have a non-integer proton spin number?
How can a star become small and dense enough to become a black hole? My understanding is that a...
What are the quantum numbers that are involved in the distinction between matter and antimatter? I...
from New Delhi
Gravity can produce motion in a body. Thus, it does work. But, for doing work, energy is needed....
Given: a horizontal rigid tube with one end on an axis at a constant rotation. Insert a solid ball...
A F Jenks
from Nelson, NZ
When a laser is bounced off the reflector Apollo crew placed on the moon, or any light is reflected...
from Mississauga, ON
I have a wierd thinking question regarding electricity. When we have a positive charge or a...
from Melbourne, Australia
Do you think scientists will ever create a wormhole? And if they are able to create a wormhole how...
from the Internet
If I were to tie a rope or something like that to the moon and have it dangle far enough toward...
from Tienen, Belgium
Can centrifugal force be used to create an inertia drive by tightening/pulling the orbiting...
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