If an alpha particle (two protons and two neutrons) is given an initial (nonrelativistic) velocity vvv at a very far distance and is aimed directly at a gold nucleus (Z=79Z=79), what is the closest distance ddd the alpha particle will come to the nucleus? In this problem you can estimate that the mass of the proton mpmpm_p is equal to the mass of the neutron and only consider the effects of a single gold nucleus. Assume that the alpha particle comes close enough so that the nucleus is not substantially screened by inner-shell electrons. Express your answer in terms of mpmpm_p, the permittivity

Explain why you think this diagram shows what happened to the carbon in the biodome.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.