Is it possible for an object moving around a circular path to ...

[ericka1]

Is it possible for an object moving around a circular path to have both centripetal and tangential acceleration?
 
  A)
 
  No, because then the path would not be a circle.
  B)
 
  No, an object can only have one or the other at any given time.
  C)
 
  Yes, this is possible if the speed is constant.
  D)
 
  Yes, this is possible if the speed is changing.

Question 2

How far would the movable mirror in a Michelson interferometer need to be moved for 800 fringes to be counted using 633 nm light?
 
  A)
 
  0.253 mm
  B)
 
  0.506 mm
  C)
 
  1.11 mm
  D)
 
  0.760 mm
  E)
 
  2.23 mm

[ErinKing]

Answer to Question 1

D

Answer to Question 2

A

[ericka1]

Gracias!

[carlsona147]

Excellent