What is the role of lenses in microscopy?

Which atomic model was proposed as a result of j. j. thomson’s work?

Formulating a hypothesis: part i since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of " because when writing your hypothesis

The smallest particle of an element that retains its identity in a chemical reaction. true or false