The difference between the Carbon 12 and Carbon 14 isotopes is the

atomic numbers

number of protons

number of neutrons.

number of electrons.

Which lists imaging techniques that use wave behaviors in order of increased risk of cancer from least risk to greatest?

When objects in space collide the impact forms a?

Why does the total amount of energy before and after any energy transformations remain the same? answer : Because energy cannot be created or destroyed, the total input is equal to the total output.

What does voltage describe

What is a biological study?

Hannah has information about an object in circular orbit around Earth. mEarth = 6.0 * 1024 kg G = 6.67 * 10-11 What additional information does Hannah need in order to calculate the tangential speed of the orbiting object?

All objects are attracted to each other by the force of

Samantha wants to study circus performance when she gets to college. She has mastered many physical skills already, but she keeps falling short on her jumps.

Is this Conduction, Convection, or Radiation: The top floor of a building is the warmest.

The law that states the volume of gas is directly proportional to its temperature in kelvins if the pressure and the number of particles is constant is * a. Boyle's Law b. Gay-Lussac's Law c. Einstein's law. d. Charles's law.