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Section #:
Practice Exam #1
Physics 2425
PART I: MULTIPLE CHOICE QUESTIONS
Choose the best answer for each of Questions 1-4 below. Circle the letter corresponding to your answer.
(3 pts each)
1.
2.
Which of the following is not a valid unit for
Chapter G - Problems
Blinn College - Physics 2425 - Terry Honan
Problem G.1
A 0.12 kg ball dropped from a height of 2.0 m rebounds to 1.8 m. (a) What is the change in the ball's momentum during its collision with the floor? (b) Suppose the ball is in cont
Chapter G - Problems
Blinn College - Physics 2425 - Terry Honan
Problem G.1
A 0.12 kg ball dropped from a height of 2.0 m rebounds to 1.8 m. (a) What is the change in the ball's momentum during its collision with the floor? (b) Suppose the ball is in cont
Chapter F - Problems
Blinn College - Physics 2425 - Terry Honan
Problem F.1
A 600 N force pushes a refrigerator 8 m along a floor. What is the work done by the force?
Problem F.2
Junior lifts a 20 N weight slowly (assume zero acceleration at all times) a
Chapter F - Problems
Blinn College - Physics 2425 - Terry Honan
Problem F.1
A 600 N force pushes a refrigerator 8 m along a floor. What is the work done by the force?
Solution to F.1 For a constant force in one dimension: W = F D x = 600 8 = 4800 J
Proble
Chapter E - Problems
Blinn College - Physics 2425 - Terry Honan
Problem E.1
(a) What is the centripetal (radial) acceleration of a point on the earth's equator? (b) Give an expression for the centripetal acceleration as a function of the latitude angle, q
Chapter E - Problems
Blinn College - Physics 2425 - Terry Honan
Problem E.1
(a) What is the centripetal (radial) acceleration of a point on the earth's equator? (b) Give an expression for the centripetal acceleration as a function of the latitude angle, q
Chapter D - Problems
Blinn College - Physics 2425 - Terry Honan
Problem D.1
The same force acts at different times on two masses. m1 is given an acceleration of 4 m s2 and m2 is given an acceleration of 1 m s2 . (a) What is the ratio of the masses, m2 m1
Chapter D - Problems
Blinn College - Physics 2425 - Terry Honan
Problem D.1
The same force acts at different times on two masses. m1 is given an acceleration of 4 m s2 and m2 is given an acceleration of 1 m s2 . (a) What is the ratio of the masses, m2 m1
Chapter C - Problems
Blinn College - Physics 2425 - Terry Honan
Problem C.1
Two points have cartesian coordinates H3 m, -8 mL and H-5 m, 5 mL. (a) Convert these points to polar coordinates. (b) What is the distance between these points?
Problem C.2
Two po
Chapter C - Problems
Blinn College - Physics 2425 - Terry Honan
Problem C.1
Two points have cartesian coordinates H3 m, -8 mL and H-5 m, 5 mL. (a) Convert these points to polar coordinates. (b) What is the distance between these points?
Solution to C.1 (a
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In our Conservation of Angular Momentum lab, we used our lab equipment to study
and observe the moment of inertia of a system. After giving a platter an initial
rotational velocity, we then added a second object (platter, bar, or ring) and observed
how it
For our 1D Dynamics lab, we used Mathematica software to study air resistance and
terminal velocity. By modifying some Mathematica codes to reflect the proper
formulas for free fall with viscous quadratic damping, we were able to study the
relationship be
Practice Exam #1 ANSWER KEY
Physics 2425
1.
c
2.
d
3.
f
4.
i
5.
5.06 km , 20.2D N of W
6.
0.36 m/s, 52D S of W
7.
(a) t = 0.682 s and t = 2.99 s
(b) vx = 24.0 m/s at all times, v y = 11.3 m/s at t = 0.682 s , v y = 11.3 m/s at t = 2.99 s
(c) 30.0 m/s , 36
Name:
ID#:
Section #:
Practice Exam #2
Physics 2425
PART I: MULTIPLE CHOICE QUESTIONS
Choose the best answer for each of Questions 1-3 below. Circle the letter corresponding to your answer.
(5 pts each)
1.
An object moves in a circular path with decreasin
Exam 3 Review Notes
Chapter 9
Category I
Sec 9.4: Energy in Rotational Motion
Sec 9.2: Rotation With Constant Angular Acceleration
Key:
Sec 9.6: Moment of Inertia Calculations
o Derive formula for moment of inertia for some
uniform object simple one, like
Name:
ID#:
Section #:
Final Exam
Physics 2425
PART II: FREE-RESPONSE (SHOW-YOUR-WORK) PROBLEMS
For Questions 13-19, write your answers in the spaces provided. If you need additional space, ask your instructor
for scratch paper. You must answer each part o
Practice Exam #2 ANSWER KEY
Physics 2425
1.
(f)
2.
(b) and (d)
3.
7
G
rCM = 0, m
10
4.
(a) m2 / m1 =
g a
a + g cos + g sin
(b) m2 / m1 =
1
cos + sin
5.
1.1 m/s
6.
(a) 43.2 J
(b) 15.2 J
(c) 3.61 m/s
7.
8.
0.104 J
6.55 m/s
9.
1.1 102 J
10. (a)
(b)
G
m
J
Exam 1 Review Notes
Chapter 1
Category I
Vectors (Secs 1.7 1.9):
Key:
o Adding, subtrating vectors (graphically and by
Category I: most important stuff.
components)
Definitely on exam.
o Multiplying by scalars (graphically and by
Category II: less import
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Section #:
Exam #3
Physics 2425
For Questions 1-7, write your answers in the spaces provided. If you need additional space, ask your instructor
for scratch paper. You must answer each part of the question completely and show all of your work in
Practice Exam - Final ANSWER KEY
Physics 2425
13. vi = 2.73 m/s
14. (a) v1 f = 1.5 m/s , v2 f = 6.5 m/s (+ direction taken to be to the right)
(b) 73.0
15. 32C
16. vi =
4GM E
3RE
17. f = 3.2 102 rad/s
18. d max = 3.0 m
19. (a) Wnet = 83 J
(b) v f = 5.3 m/
In this free fall experiment we measured the acceleration due to gravity. We were
able to do this by dropping a picket fence through a photogate and observing the
time intervals between the leading edges of its stripes. After measuring the distance
betwee
Chapter B - Problems
Blinn College - Physics 2425 - Terry Honan
Problem B.1
x HmL
8
4 2 t HsL 2 3 7
(a) What is the average velocity between 0 s and 2 s, between 3 s and 7 s, between 2 s and 7 s? (b) What is the instantaneous velocity at 1 s and and at 4
Chapter B - Problems
Blinn College - Physics 2425 - Terry Honan
Problem B.1
x HmL
8
4 2 t HsL 2 3 7
(a) What is the average velocity between 0 s and 2 s, between 3 s and 7 s, between 2 s and 7 s? (b) What is the instantaneous velocity at 1 s and and at 4
Chapter N - Problems
Blinn College - Physics 2425 - Terry Honan
Problem N.1
What is the change in entropy of 3 kg of water initially at 20 C when it is cooled and frozen resulting in ice at 0C?
Solution to N.1 This is a two step problem. D S1 is the chang
Chapter M - Problems
Blinn College - Physics 2425 - Terry Honan
Problem M.1
30 g of water is placed in a 2.5 liter pressure cooker and heated up to 350 C. What is the pressure inside the cooker assuming no gas escapes and neglecting the gas that was initi