Tara goes on a camel safari in africa. she travels 5 km north, then 3 km east and then 1 km north again. what distance did she cover? what was her displacement?

Distance: 9 km

Displacement: 6,7 km

Explanation:

There are many people who believe that there is no difference between distance and displacement. The different between distance and displacement is that distance is the length of the journey taken to get there, displacement is a measurement of the space between two points.

In this case, distance would be equal to:

5 km + 3 km + 1 km= 9 km

However, displacement can be calculated using triangles:

3 km east total

6 km north total

using the formula:

r² = x² + y²

r² = (6)² + (3)²

r = 6,7 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:

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.