If the 5th order minimum in the diffraction pattern is at 40, ...

[futuristic]

If the 5th order minimum in the diffraction pattern is at 40, what is the highest order minimum in the pattern?
 
  A)
 
  6
  B)
 
  11
  C)
 
  8
  D)
 
  7
  E)
 
  9

Question 2

A teacher sends her students on a treasure hunt. She gives the following instructions:
 
  1. Walk 300 m north
  2. Walk 400 m northwest
  3. Walk 700 m east-southeast and the treasure is buried there.
  As all the other students walk off following the instructions, Joe physics student quickly adds the displacements and walks in a straight line to find the treasure. How far and in what direction does Joe need to walk?
  A)
 
  187 m in a direction 67.3 north of east
  B)
 
  481 m in a direction 40.9 north of east
  C)
 
  399 m in a direction 52.5 north of east
  D)
 
  284 m in a direction 28.2 west of north
  E)
 
  The treasure position cannot be reached in one straight walk.

[britb2u]

Answer to Question 1

D

Answer to Question 2

B

[futuristic]

Gracias!

[ricroger]

Excellent