The two members of a binary star system are a distance d apart, and they revolve about their common center of mass with angular velocity w. show that are doppler splitting (delta lenda) between the spectral lines from the two stars has a maximum value of ( lenda w d/c ) , provided the orbital plane of thwe star system is edgewise ae seeen from the earth , what would the spitting be if the orbital plane was inclinde at a certain angle ?

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

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

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring