13. potential energy is there store energy for when it's needed. if an object has a mass of 30 kg and a height of 25 meters, what's the potential energy ? the equatioh is e p =mgh .

7350 J

Explanation:

The potential energy stored in an object is

where

m is its mass

g is the acceleration of gravity

h is the heigth of the object relative to the ground

In this problem:

m = 30 kg is the mass of the object

h = 25 m is the height

Substituting,

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: