Author Question: If the 5th order minimum in the diffraction pattern is at 40, what is the highest order minimum in ... (Read 52 times)

futuristic · **on:** Jul 29, 2018

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.