The problems is:
A particle has a de Broglie wavelength of 0.00 m. Then its kinetic energy triples. What is the particle's new de Broglie wavelength, assuming that relativistic effects can be ignored?
I have no idea where to begin. Please help me:bugeye:!
The problem is:
Three, and only three, bright fringes can be seen on either side of the central maximum when a grating is illuminated with light ( = 520 nm). What is the maximum number of lines/cm for the grating?
Here is what i know / did:
since there are three fringes, m = 3
since...