a uniform cylinder of radius r and mass m rests on a horizontal plank. the plank slides horizontally with acceleration a. if the cylinder rolls without slipping, what is its acceleration relative to the plank and the ground?

d) the number of neutrons plus the number of protons

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.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

true

explanation: