Bob leaves his house and walks 110m. from that location, he walks another 160. what is bobs displacement from his house if he walks eastward both times

The figure given below shows the travelling of Bob. First he travels along east 110 m and then again travels 160 m. SO the displacement will be as shown by the figure.

Displacement =

                         = 194.16 m

SO displacement of Bob from his home = 194.16 m

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: