A bird flies straight northeast a distance of 75.8 km for 3.5 h. With the x-axis due east and the y-axis due north, what is the displacement (in km) in unit vector notation for the bird

Explanation:

The mathematical notation for the displacement vector R is given by

Now a bird flies straight northeast a distance of 75.8 km for 3.5 h such that x-axis points towards east and the y-axis points towards north.

Put and

Therefore,

Displacement vector is given by

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:

ice to water 1 water to vapour 2 latent heat