A solid conducting sphere of radius 2.00 cm has a charge 9.70 µC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge -2.50 µC. Find the electric field at the folowing radii from the center of this charge configuration. Note that the field is positive when directed radially outward and negative when directed radially inward. (a) r = 1.00 cm
N/C
(b) r = 3.00 cm
N/C
(c) r = 4.50 cm
N/C
(d) r = 7.00 cm
N/C

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.