A student wants to draw a model of an atom. Which statement describes how to find the number of neutrons to include in the model? A. Add the atomic number and the mass number.

B. Subtract the atomic number from the mass number.

C. Subtract the number of electrons from the number of protons.

D. Ads the number of electrons to the number of protons.​

Anything helps.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?