Which two options would increase the electric force between two charged
particles?

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?

What object a collides with object b and bounces back its final momentum is?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?