The volume of water stored in reservoirs is often reported in acre x feet. One acre x foot is 43,569
cubic feet. Which option below best describes how
to convert from cubic feet to cubic meters? There
are 3.28 feet in one meter.

Elias is almost correct. he just got it backwards.the correct answer is that it demonstrates elastic potential energy transforming into kinetic energy.

Yes it would be a physical change.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).