1.Which term describes the sum of the number of protons and neutrons in an atom?

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?

What electron configurations do atoms usually achieve by sharing electrons to form covalent bonds?