In a dam water flows through what to make electricity

When water from the dam passes through, the turbines spin. This creates electricity. Hydroelectric power is produced as water passes through adam, and into a river below. The morewater that passes through a dam, the more energy is produced.

Explanation:

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In a dam the water goes through a Hydroelectric generator, the generator then passes the water through and the water moves the turbines which in return transfers kinetic energy into potential energy, thus creating electricity.

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: