How do scientists determine the number of neutrons in an isotope of an atom?
a.
they find the number of protons.
b.
they divide the atomic mass by two.
c.
they add the number of electrons and protons.
d.
they subtract the atomic number from the atomic mass.

What is the role of the ocular lens?

How would doubling the made of an object change the objects potential energy

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.