Select the correct answer.
consider four objects: a, b, c, and d. if a is negatively charged and b and c attract a but repel each other, what is the charge on band
o a.
both b and c are positively charged.
b.
both b and c are negatively charged.
c.
b is positively charged and c is negatively charged.
d.
b is negatively charged and c is positively charged.
e.
both b and c have no charge.

i cant see the choices man

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.

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s