HELP PLS
lithium has three protons. which model shows a neutral atom of lithium?

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

Explain what happens at the saturation point when adding salt to water at room temperature.