The current in a certain resistor is 0.60 a when it is connected to a potential difference of 373 v. what is the current in this same resistor if the operating potential difference is 139 v? answer in units of a.

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?

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When an object is heated it contracts. a. true b. false