Tue 14 Feb, 2017 07:24 am - an amplifier of a home cinemas equipment can achieve a sound level of 100 dB. how many of these amplifier is needed to exceed threshold where the equipment is found?
(view)
Tue 14 Feb, 2017 07:14 am - A light with a wavelength if 510 nm, is just able to eject electrons from a metal. Find
a. Work function.
b.what will the speed of the fastest electron be ,if the used wavelength is 380 nm? (view)
