Student a pushed on the cart with a force of 500 n. student b pushed on the other side of the cart. the cart did not move. how much force did student b apply? explain how you know.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98