If it takes a force of 20n to stretch a spring 0.1 meter how much energy does the spring have?​

The energy stored in the spring would be 1 joule.

Explanation:

hope that helps?

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.