The wavelength of some violet light is 420.0 nm. what is the frequency of this violet light?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

What are similarities and differences between refraction, reflection, diffraction and absorption?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same