[问答题]
A cube of side l is placed in a un19*m5t zbc jpz ywb ;ms7ts o2vxt3r04iform field $ E\,=\,6.50\times10^{3 }\,N/C$ with edges parallel to the field lines.
(a) What is the net flux through the cube?
(b) What is the flux through each of its six faces?
