(c) The electric fields from two e/m waves are described by E1 = 10.0 cos(kr – wt) N/C andE2 = 15.0 cos(kr – wt + 60°) N/C. What is the phase of the resultant electric field (in degrees)?(d) Electrons moving at a speed of 30 m/s pass through a single slit of diameter 8.5 x 10-5 m. Adiffraction pattern forms, due to the wave nature of the electrons. At what angle (in degrees) is thefirst-order minimum of this pattern located?(e) A neutron (with mass m, = 939.566 MeV/c²) is confined inside a nucleus of the most common isotopof iron, Fe. Assume the nucleus is spherical, and that the uncertainty in the position of the neutron isthe diameter, not the radius, of the nucleus. What is the minimum uncertainty in the velocity of theneutron, in m/s?

Concepts used: Resultant electric field of multiple waves is found by principle of superposition of…

Answered: (c) The electric fields from two e/m…

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