Brad loves his new motorcycle. He takes it for a spin and travels 70 km in 1.2 h. He then stops to let everyone admire it for 0.30 h. Finally he zooms off down the highway and travels 100 km. in next 1.0 h.

Calculate motorcycle’s average speed.

113.33333333 km/hr

Explanation:

The formula for Average Speed = Distance (Kilometers)/Time(hours)

Total Distance travelled = 70km +100km

= 170km

The Total time is takes to travel that distance = 1.2h + 0.30h + 1h

= 1.50hr

Average speed of the Motorcycle = 170km/1.5hr

= 113.33333333 km/hr

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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