A system consists of electrons and protons only. It contains 320 Protons and has a total charge of -51e. What is the mass of the system?

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

The necleus of an atom is made up of what subatomic particles?