The first man-made satellite, sputnik 1, was launched into space in 1957. this satellite was used to study the conditions found in the higher atmospheric layers.

since then, other uses for satellites have been developed. one of these uses, satellite imagery, has made it possible to capture pictures of objects in space or on the earth. the advances that created satellite imagery have led to being able to
a.
homes and neighborhoods.
b.
planets and moons.
c.
types of landforms.
d.
all of these

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