Which of the following weighing balances performs measurement in a closed compartment with no air currents to disturb measurement? spring balance/analytical balance/ hydraulic balance

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?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?