Which statements about magnetic fields are true? Choose more than one answer. They attract certain metals
They require electric currents
They exert force
Electricity can create them
They grow stronger with distance from the magnet
They all have the same strength

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.

this means that the temperature of both substances will be equal