There are several ways to give an object potential energy. One can move the object against the force of gravity to increase. One can also stretch an object out or put pressure on it.
They are nitrogen, oxygen, hydrogen
Energy increases with increasing frequency.
10 decigrams are equivalent to 1 gram, so 2,100 grams are equivalent to 2100 x 10. This makes 21,000.
I tried asking my sister for this but she doesn't get it neither do I
