A vented gasoline tank leaks a fluid stream through a fuel port. A heroic effort is needed to stop the leak. Superman appears on the scene. A curved metal plate, just right to patch the hole, happens to be nearby. Superman picks up the plate and runs at 10 m/s into the approximately horizontal stream of gasoline. The gasoline flows over the plate at constant speed and is deflected upward at the angle of the plate. Find the x and z components of the force that Superman must exert to hold the plate as he runs steadily forward. Neglect friction.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

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:

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