Which is a characteristic of centripetal acceleration? it is directed outward from the center of a circle. it is directed inward, toward the center of a circle. it results in an object moving faster. it results in an object moving slower.

Centripetal acceleration AND centripetal force are both directed inward, toward the center of a circular path.  That's what makes an object move in a circular path.  If the centripetal force weren't there, then there wouldn't be any centripetal acceleration, and the object would just keep traveling a straight line.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: