Physics

There has been much mention of antimatter, such as antineutrinos. I was wondering what exactly antimatter consisted of. How is it created, what is it...

Physics

If the earth were suddenly stopped in its orbit, how long would it take for it to fall into the...

Other

I have been teaching high school science for 16 years and I am interested in knowing what you feel are currently the essential skills, knowledge and...

Physics

Is there an exact relationship between Gravitational forces and Centrifugal forces? If so, is Centrifugal force basically the same as Gravitational...

Physics

If you could dig a hole from one side of the earth to the other passing though the core, what would happen to a ball dropped in at one of the ends...

Physics

Conservation of momentum can explain the exchange of a virtual photon between two electrons and the repulsive force that results. But it cannot...

Physics

Supposedly in classical electromagnetism an accelerating charge radiates. If so, why? If so, then does an observer in the accelerating frame "see"...

Physics

Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...

Physics

1) Which of the following two options is more widely accepted by the scientific community? a) Elementary particles actually exist in quantum states...

Physics

I've got a question about light. As I understand it, light is a particular form of energy--in order for something to produce light, energy of some...

Physics

Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer, since there is no heat or movement of atoms? If no...

Physics

If mass can be converted to energy by using E=mc2, how can energy be converted to...

Physics

How does mass shifting affect Earth's rotation? Could melting of polar icecaps cause a change in rotation? ...

Physics

I have been reading Feynman and what he says seems to make sense to me, in particular:
photons are particles
photons do not travel in...

Physics

Galileo said, "in a vacuum, all objects fall at the same speed." Well, I have an idea that might prove him wrong. My idea goes as follows: Take a...

Physics

When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what balances the force of gravity to prevent the ball...

Physics

If you shine a light through a glass of water, the light slows down. What makes it speed up again after it leaves the glass of...

Physics

I recently read a book on the big bang, and it said that protons and neutrons are made up of 3 quarks. It also said that up quarks have a + charge...

Physics

What are the quantum numbers that are involved in the distinction between matter and antimatter? I know that a particle and anti-particle must have...

Physics

Given: a horizontal rigid tube with one end on an axis at a constant rotation. Insert a solid ball into the tube at the axis end. The ball will...

Physics

How can a star become small and dense enough to become a black hole? My understanding is that a neutron star forms when a star collapses and...

Physics

What exactly are Proton Spin Numbers, and how can you have a non-integer proton spin...

Physics

I am currently researching EMP for a essay at my college. My essay is looking at possible non-lethal techniques in order to stop suicide bombers. The...

Physics

When a laser is bounced off the reflector Apollo crew placed on the moon, or any light is reflected back off a mirror 180 degrees, are they (a) the...

Physics

Gravity can produce motion in a body. Thus, it does work. But, for doing work, energy is needed. Does that mean every mass has energy? If not, which...

Physics

I have a wierd thinking question regarding electricity. When we have a positive charge or a negative charge, we can draw the electric field lines, or...

Physics

Do you think scientists will ever create a wormhole? And if they are able to create a wormhole how will they control it so as to take us places...