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Unformatted text preview: d to the
floor by the steel ball.
b. 1 N-s
c. 2 N-s
d. 10 N-s
19. Four identical bulbs are connected in parallel to
a 12V ideal battery. Two of them burn out.
The remaining two:
a. Look brighter than before
b. Look the same as before
c. Look dimmer than before
d. Are off
20. Three resistors, R1 = 9Ω, R2 = 3Ω, R3 = 1Ω,
are connected in parallel to a 9 V battery.
What is the total power dissipated in the
(a) 180 W
(b) 117 W
(c) 99 W
(d) 81 W Page 3 of 15 ©Prep101
21. A light ray goes through two thick rectangular
slabs of glass, each of the same uniform
thickness. The first slab has index of
refraction n1 and the second n2. If n1 < n2, how
does the original angle θi compare to the final
angle θf where the ray leaves the second slab
going back into air? a.
d. 24. A cannon fires a projectile as shown. The
dashed line shows the trajectory in the absence
of gravity. Points M, N, O, and P correspond
to one second time intervals. Calculate the
heights, x, y, and z. (All answers are in
metres). θi > θf
θi < θf
θi = θf
θi = (n1/n2) θf 22. A 30 m tall building is being photographed
with a camera with a lens of focal length 50
mm. How tall is the image on the film if the
building is 100 m away?
a. 30 mm
b. 15 mm
c. 10 mm
d. 3.0 mm
23. The figure is a scaled diagram of an object
and a converging lens. The focal length of
the lens is 5.0 units. An object is placed 3.0
units from the lens as shown. a.
d. 25. There is a kinetic coefficient of friction µ k =
0.18 between a box (5 kg) and the surface it is
on. The box starts from rest and is pushed with
a constant force of 12 N for 5 seconds. What is
the total distance travelled by the box before it
comes to rest? (All answers are in metres). a.
d. Approximately, what is the image
d. 4.9, 9.8, 14.7
4.9, 19.6, 44.1
9.8, 39.2, 88.2
9.8, 19.6, 29.4 -2.0 units
-8.5 units Page 4 of 15 32.9
26. A point source of sound on top of a police car
emits a signal...
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This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.
- Spring '11