Little physics problem...?

Question

When a highly coherent beam of light is directed against a very fine wire, the shadow formed behind it is not just that of a single wire but rather looks like the shadow of several parallel wires. The explanation of this involves:

a) refraction
b) diffraction
c) reflection
d) Doppler effect
e) an optical illusion

Answer 1

b) diffraction

Answer 2

I know you probably want a solution including the rope... but in my experience rope doesn't work that well because it breaks easily especially if you are trying to move such a weight as a vehicle. I can imagine tying the rope to the front bumper and pulling on the other end while you are giving the Jeep gas... but this would be ineffective in my opinion (and experience). I have seen a rope used when trying to pull out a stuck vehicle with another and it usually does not work.Also using the wheel sounds good until you realize that it could possibly damage your vehicle because of the uneven stresses. Unless you have a winch with a chain or cable, a rope will not do much good and neither will trying to pull yourself out. I have been stuck quite often and generally it is easier to simply add traction under the wheels in the form of sticks, logs, rocks etc. and make a trail of such materials leading out of the mud so that you can simply drive out of the mud using the traction you have created. Works like a charm in snow and mud and sand.... So my first thing to do would be to gather a bunch of materials grass, leaves etc first.. then larger sticks/logs and rocks. Then I would dig slightly underneath the front and rear wheels in behind, line it with the materials push the jeep a little backwards onto the new footing and then dig a little under the front of the tires and make a trail of the same materials in front of each tire leading to solid ground, get back in the vehicle and in most cases drive away on the first try.... That at least has been my tried and true method of getting unstuck in all seasons when a tow truck can't be reached.

Answer 3

an optical illusion

Answer 4

a

Answer 5

diffraction,