One Saturday morning, a family drives east from Olds to Trochu, a distance of 59 km. Then they drive west to Sundre, a distance of 97 km. What distance does the family travel? Show your work. (1 mark)
What is the displacement (magnitude and direction) of the family? Show your work.

Explanation:

distance is how far they have actually driven. so just add up the distances:

59+97=156km

displacement is how far they are from their starting point. so they drive 59 kilometers east, then 97 kilometers west. so we subtract:

97-59=38km west of Olds

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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