Ahelicopter flies 250 km on a straight path in a direction 60° south of east. the east component of the helicopter's
displacement is
km.

The east component of the helicopter's displacement is 125 km.

Explanation:

Given:

The magnitude of displacement is,

The direction of displacement is 60° south of east.

The direction is shown in the figure below. From the figure, the horizontal component of the displacement vector is the east component.

Thus, the east component of displacement is given as:

Hence, the east component of the helicopter's displacement is 125 km.

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: