If 2 grams of element x combine with 4 grams of element y to form compound xy, how many grams of element y would combine with 48 grams of x to form the same compound?

how many grams?

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 is not true about oxygen-17 and oxygen-18?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?