Identify the fringe or fringes that result from the interference of two waves whose phases differ by exactly 2? .

enter the letter(s) indicating the fringe(s) in alphabetical order. for example, if you think that fringes a and c are both correct, enter ac.

the same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated.

when in the water, what happens to the interference fringes?

they are more closely spaced than in air by a factor of 1.33.

they are more widely spaced than in air by a factor of 1.33.

they are spaced the same as in air.

they are shifted upward.

they are shifted downward.

The softest and hardest minerals are: softest hardest

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r