Which types of orbits are found in the principlal energy level n=4

After the discovery of the electron, scientists knew that atoms must also have positively changed particles because? A. Atoms have mass B. Atoms have electrical charge C. Atoms have neutral charge

Speed is the ratio of the distance an object moves to A. the amount of time needed to travel the distance. B. the direction the object moves. C. the displacement of the object. D. the motion of the object.

Is static electricity positive or negative? Explain

6. A physics book slides off a horizontal table top with a speed of 1.25m/s. It strikes a floor in 0.4s. What's the speed with which the book strikes the floor?

A board 6 1 8 feet in length is shortened by having 2 1 12 feet cut off one end. the length of the shortened board is

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.

A skateboarder is accelerating forward. How would his acceleration change if he had more mass? A. His acceleration would decrease. B. His acceleration would be zero. C. acceleration would stay the same. D. acceleration would increase.

What is phanerogam? mention it's two group

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

What is electrical conductivity?