What would be the mass number of the majority of atoms in a sample if the atomic mass is 39.10 amu? 39
40
41
42
None of the above

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

Describe the forces both attractive and repulsive that occur as two atoms move closer together.