what will happen to the electric force between two identical negative charges as they move closer together

If two objects at different te, peraure are in contact with each other what happens to their temperature

Imagine one batch of soup (batch “a”) is made with 8.19 g/can of salt, according to the recipe, and a second batch of soup (batch “b”) is made with 8.32 g/can of salt. explain which batch would be more resistant to frost damage if it is shipped a great distance in winter and explain why.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?