# Recent content by hahaha

2. ### Nuclear power reactors

What are 1st, 2nd, 3rd, and 4th geration reactors? How does nuclear fission work (in regard to alpha particles and beta particles)? Thanks
3. ### Wave tank

thanks for the help. one more thing, is it true that diffraction is the greatest when the width of the gap is equal to the wavelength?
4. ### Wave tank

sorry, wrong prefix... so, increased depth = increased velocity = incresed wavelength = increased diffraction... correct?
5. ### Wave tank

When using a wave tank to create waves that then pass through a gap in a barrier to create refraction that expands out the other side of the gap,, if the depth of the water is increased but the frequency is the same, will the amount of refraction increase or decrease? Basically, when depth in...
6. ### Grade 12 Physics questions

Jameson, so are you agreeing with Atomos that the larger vehicle will have a greater momentum?
7. ### Grade 12 Physics questions

I have two questions that I need answers for: 1. A small truck and a large truck have the same kinetic energies. Which truck has the greater momentum? Justify your answer. 2. (a) Can an object have kinetic energy, but no momentum? Can an object have momentum, but no kinetic energy...
8. ### FBD and what forces should I include?

thanks, i'll try to get a drawing
9. ### FBD and what forces should I include?

I’m just looking for forces acting on the mass at the end of the string
10. ### FBD and what forces should I include?

Basically the situation is, you are flinging a string with a mass at one end over your head. The strings flies around in circles kind of like a helicopter. My question is, what forces should I include in the FBD. I know there is centripetal force. There should be gravity pulling down, but...
11. ### FBD and what forces should I include?

In the following situation, how should I draw a FBD and what forces should I include? A metal rod has a string coming out of one end. The other end of the string is attached to a small mass. The metal rod undergoes spinning action by the hand so that the string with the mass attached spins...