PHYS 210 Final, Fall 2014
American University of Beirut · Introductory Physics II · 1 page
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Marks: 3 A mass starts from rest and moves along the x-axis under the influence of a net force that is proportional to t, its
kinetic energy is proportional to
Choose one answer. tx
@ tx
ty
at x
oe |
Incorrect
Marks for this submission: 0/3.
14
Marks: 3 A clear sheet of polaroid is placed on top of a similar sheet so that their polarizing axes make an angle of 30° with
each other. The ratio of the intensity of emerging light to incident unpolarized light is:
Choose one answer. 1:4 x
1:3 x
1:2 x
3:4 x
© 387
Correct
Marks for this submission: 3/3.
15
rears The sound intensity 2.3 m from point source is 0.50 W/m2. The power (in Watt) output of the source is:
Answer: (33.24
Correct
Marks for this submission: 3/3.