The total energy used in a system is 675 j. the kinetic energy changes from 296 j to 432 j. which statement best describes the potential energy of this system? 1. it changes from 296 j to 432 j. 2. it changes from 379 j to 243 j.3. it changes from 432 j to 296 j.4. it changes from 243 j to 379 j.

It changes from 379 J to 243 J.

Explanation:

It is given that,

The total energy of the system is, TE = 675 J

Initial kinetic energy,

Final kinetic energy,

We know that the energy of a system remains does not change it remains the same.

Also, TE = K + U

Where, U is the potential energy of the system. Let are the initial and final potential energy of the system.

So, the initial and final potential energy of the system are 243 J to 379 J. Hence, the correct option is "It changes from 379 J to 243 J".

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.