PHYSICS 220 Exam #2 EXAM/TEST FORM 01
Pick the BEST answer. Questions 1-25 are each worth 4 points.
8. A globe can be treated as a hollow spherical shell with mass m=1 kg and
radius r=20 cm. If the globe is initially at rest but is struck on the equator
b
. QUESTIONS 31 - 36 EACH WORTH 10 POINTS
31) Water owing through a cylindrical pipe suddenly comes to a section of pipe where the
diameter decreases to 86% of its previous value. If the speed of the water in the larger section of
the pipe was 32 m/s what
- 8) What is thewavelength of the wave shown in thewfigurezm. . . as -
' yon)
A)4m. B)1m. C)8m. D)2m.
E) It cannot be determined from the given information.
9) A train passes you standing by the track blowing its whistle. You note that:
A) The wavelengt
18) The reason an astronaut in an Earth satellite feels weightless is that
A) the astronaut is in the state of ee fall.
B) the astronaut is beyond the range of the Earth's gravitational pull.
C) the astronaut's acceleration is zero.
D) the astronaut is at
7
28) A boy throws a ball with an initial velocity of 25 m/s at an angle of 30 above the horizontal. If you
neglect air resistance, how high above the projection point is the ball after 2.0 s?
A) 5.4m B) 13 m C) 25111 D) 43 m E) 50m
29) A atbed truck is c
PHYSICS 220 TEST I FORM A
PICK THE BEST ANSWER. QUESTIONS 1 - 25 EACH WORTH 4 POINTS
1) You drive 6.0 km at 50 km/h and then another 6.0 km at 90 km/h. Your average speed over the 12 km drive
will be
A) exactly 38 km/h. B) greater than 70 km/h. C) equal t
8) A person sits, With arms extended, on a freely spinning labestool that has no friction in its axle. Whenthis
person pulls her arms next to her body,
A) her moment of inertia decreases and her angular speed increases.
B) her moment of inertia decreases
QUESTION 32 IS WORTH 8 POINTS.
32) A solid uniform disk of diameter 3.20 m and mass 42 kg rolls without slipping to the bottom of a hill,
starting from rest. If the angular speed of the disk is 4.27 rad/s at the bottom, how high did it start on the hill?
25) Three objects are moving along a straight line as shown in the gure. Taking the positive direction to be to
the right, what is the total momentum of this system?
5.00 m/s 4.00 m/s 2.00 m/s
0 -) 4 0 O -
8.00 kg 15.0 kg 3.00 kg
A) -106 kg - m/s B) 0.00
5) Swimmers at a water park have a choice of two frictionless water slides, as shown in the gure. Although
both slides drop over the same height h, slide 1 is straight While slide 2 is curved, dropping quickly at first and
then leveling out. How does the
I
31) A 0.14-kg baseball is dropped from rest from a height of 2.0 m above the ground. What is the magnitude
of its momentum just before it hits the ground if we neglect air resistance?
A) 0.28 kg - m/s B) 0.88 kg - m/s C) 0.44 kg - m/s D) 0.62 kg - m/s E
14) The second law of thermodynamics leads us to conclude that:
A) The entropy of the universe remains constant.
B) The total energy of the universe is constant.
- C) Disorder in the universe is increasing with the passage of time.
D) The average tempera
21)A hypothetical planet has a mass oft'onehalf that" of the Earth and aratiius of twice that of '- r
the Earth. What is the acceleration due to gravity on the surface of the planet in terms of g, the
acceleration due to gravity at the surface of the Ear
PHYSICS 220 FINAL FORM A
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QUESTIONS 1 30 EACH WORTH 8 POINTS
MULTIPLE CHOICE. Choose the best answers
1) When you blow some air above a paper strip, the paper rises. This happens because
A) the air above the paper moves slower and th
PHYSICS 220 Exam #2 EXAM/TEST FORM 01
Pick the BEST answer. Questions 1-25 are each worth 4 points.
EXAM/TEST FORM 01
PHYSICS 22000 - F16 Second Midterm Exam
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PUID:
SIGNATURE:
Instructions
. Fill in your name and student number on the bubble sh
PHYSICS 220 Exam #1 FORM A
Pick the BEST answer. Questions 125 are each worth 4 points.
FORM A
PHYSICS 22000 F16 Exam #1
PRINT NAME:
PUID:
SIGNATURE:
Formula
11' = 3.14159 G = 6.673 X 1011 m3/(kg- 32) 1 N = 1 kg - m/s2
g = 9.81 m/s2 = 32 ft/s2 11b = 4.448
PHYSICS 220 Exam #2 EXAM/TEST FORM 01
Pick the BEST answer. Questions 125 are each worth 4 points.
1. Which statement is true regarding inelastic collisions?
(a) Momentum is not conserved
(b)\ Energy is not conserved
Kinetic energy is not conserved
)d The
PHYSICS 220 Exam #1 FORM A
Pick the BEST answer. Questions 125 are each worth 4 points.
12. Which of the following is a vector quantity?
5L
eeleration
(a) energy (b) mass (c) path length (d) speed
13. On the moon, the acceleration of gravity is appr
PHYSICS 220 Exam #1 FORM A
Pick the BEST answer. Questions 1-25 are each worth 4 points.
16. A satellite is orbiting a planet at distance r from its center with tangential
velocity v. ' Another satellite is orbiting with twice this velocity. What is the
d
PHYSICS 220 Exam #1 FORM A
Pick the BEST answer. Questions 1-25 are each worth 4 points.
9. An object with a mass of 0.100 kg moves with a speed of v = 8 m/S and is
tied to a string that passes through a hole in the center of a frictionless
table. If the
PHYSICS 220 Exam #1 FORM A
Pick the BEST answer. Questions 1-25 are each worth 4 points.
21. Super-Dave Osborne is to be shot out of a canon that is aimed at 60 above
the horizontal. What muzzle velocity is needed if he is to land in a net that
is located
PHYSICS=220~FINAL . - FORMA
PRINT NAME: PII):
' QUESTIONS 1 35 EACH WORTH 7 POINTS
-MULTIPLE CHOICE. Choose the best answers
1) Which of the following statements concerning speed is/ are correct?
A) Speed must change in order to have an acceleration.
B) C
25) On a cold day, a piece of metal feels much colder to the touch than a piece of wood.
This is due to the difference in which one of the following physical properties of these
materials?
A) density B) specific heat C) emissivity D) thermal conductivity
7) The intensity of a spherical wave from a point source at a distance d from the source
is I. What is the intensity at a distance 2d from the source?
A) 41 B)I/2_ C)I/4 D')I/\/2' E) 21
8) What is the wavelength of the wave shown in the figure?
)2 (m)
4
4
. 18) You are in a train traveling on a horizontal track and notice that a piece of luggage
starts to slide directly toward the front of the train. From this observation, you can
conclude that this train is
A) speeding up. B) slowing down. C) changing di
I
23) Identical forces are exerted for the same length of time on two different objects. The magnitude of the-
change in momentum of the lighter object is
A) smaller than the magnitude of the change in momentum of the larger mass object, but not zero.
B)
f 34) The melting point of aluminum is 660C, its latent heat of fusion is 4.00 X 105 J/kg, and its
specic heat is 900J/kg ' K. How much heat must be added to 500 g of aluminum originally at
27C to completely melt it?
A) 395 k] B) 485 k] C) 273 k] D) 14 k]
31) Water ows out ofa largereserve-ir through an open pipe, as shat-1min the gure. What is the. speed of the.
water as it comes out of the pipe?
A) 8.9 m/s B) 9.9 m/s E) 16 m/s
QUESTION 32 WORTH 8 POINTS
32) In a section of horizontal pipe with a diamet
13) As shown in the figure, uid fills a container having several sections. At which of
the indicated points is the pressure greatest? '
A)A B)B _., OCH _ 7,. . , D)D ,.
E) The pressure is the same at each of the labeled points.
14) The second law of the
. QUESTIONS 26 - 31 ARE EACH WORTH 7 POINTS.
26) Find how much mechanical energy was converted to internal energy in the system box-surfaceEarth when
a box moves in a complete circle of radius 1.82 m on a uniform horizontal oor. The coefcient of kinetic
f