A car audio system requires a current of 55.0-60.0 mA to run efficiently. Anything more will blow the fuse, and anything less won't provide sufficient power. If your car
battery provides a potential difference of 12.6 V, what is the maximum resistance that
the circuit can have and still work?
Ο 242 Ω
Ο 210 Ω
Ο 229 Ω
Ο 216 Ω

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

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Is a copper wire a conductor or insulator?