Which phrase best describes the mass movement of particles?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

In which situations is the principle of cross-cutting relationship useful in determining relative age?

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen