Final Exam. Time: 3pm-5pm, Thursday, May 5. Location : E100 Vet. Med. This information can also be found on our course schedule page

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2 Final Exam A common final exam time is scheduled d for all sections of Physics 231 Time: 3pm-5pm, Thursday, May 5. Location : E100 Vet. Med. This information can also be found on our course schedule page An alternate exam time will be scheduled for students who have conflicts with the regular time. Three students have confirmed conflicts with me and will take the exam then. You must have permission from me to take the exam at the alternate time. Alternate time: Wednesday May 4th, 12:40-2:40 pm Location: BPS 1308

3 Final : You are allowed dthree 8.5x11 sheets of notes. Bring your notes, calculator and pencil to the exam in E1Vet Med. You will have two hours to complete the exam. There is no corrections set.

4 Review The selection of problems included d in this review reflect mainly the material covered since the last midterm. Because we had no midterm on this material there is an added emphasis on it. About 40% of the exam is on the new material About 60% of the exam on the material of the first two midterms. Among the final review problems, for example, there are little or no: Two dimensional kinematics problems. Velocity addition problems Energy or power problems =I rotational dynamics problems: Buoyancy problems. To prepare adequately for the final, you will have to review the material covered on the first two midterms by studying the review problems distributed for the first two midterms, and your loncapa problems.

5 Review Strategy I will select a few older review problems from the set I distributed, ib t d do them and then spend the rest of time on the new material. The solutions will be posted and will be numbered according to the number that appears on the problem.

10 50. A wave traveling in the positive x direction has a frequency of 25.0 Hz as in the figure below. Find the amplitude (A), wavelength ( ), period (T), and speed (v) of the wave. Choose the correct values for A,,T T and v from the options below: a) 9 cm, 20 cm, 0.04 s, 500 cm/s b) 18 cm, 20 cm, 0.08 s, 500 cm/s c) 9 cm, 10 cm, 0.04 s, 250 cm/s d)18 cm, 10 cm, 0.04s, 250 cm/s A 18cm/2 9cm 10cm 2 20cm T = 1/f =1/25 s = 0.04 s v f 20cm 25Hz 500cm / s

11 48. A spring is suspended d from the ceiling. When a 1-kg mass is hung at the bottom, the spring stretches by 9.8 x 10-4 m. When the 1- kg mass is pulled further down and let go, it oscillates up and down on the spring. What is its frequency of oscillation? 1) 2 Hz 6) 12 Hz 2) 4 Hz 7) 14 Hz 3) 6 Hz 8) 16 Hz 4) 8 Hz 9) 18 Hz 5) 10 Hz 10) 20 Hz

13 51. A heat engine operating between a hot reservoir at 500 K and a cold reservoir at 200 K has an efficiency that is 70% of its maximum possible value. If it receives lx10 6 J heat energy from the hot reservoir in 25 minutes, it can do a quantity of work equal to a)6.3x10 5 J. T b)4.2x10 5 c J. a) emax ecarnot c)3.lxl0 5 T J. h 500 d)2.5x10 5 J. e)1.7x10 5 J. e e 0.7emax 0.7(0.6).42 W Q h 6 5 W e Q h.42 1x10 J 4.2x10 J

14 47. An organ pipe, open at one end, produces the middle A note (440 Hz) when sustaining a standing wave at its third harmonic. What is the length of the pipe? 1) m 6) 1.07 m 2) 0.37 m 7) 1.62 m 3) 0.58 m 8) 2.56 m 4) 0.78 m 9) 3.19 m 5) 0.97 m 10) 5.22 m

17 45. A wave has a frequency of 60 Hz and a speed of 120 m/s. What are its period and wavelength? 1) 60 s, 2.0 m 6) s, 0.50 m 2) 60 s, 0.50 m 7) s, 2.0 m 3) 2.0 s, 5.0 m 8) 7,200 s, m 4) 2.0 s, 6.0 m 9) 7,200 s, 60 m 5) s, 16 m 10) s, 6.0 m

19 Remainder of the problems That is all that t is organized. I will do as many of the rest as time allows. Note that the preceding problems appear again in the following set. If you want to match your solutions against the posted solutions, the following order is the same as on the posted solutions set.

24 P (kpa) V(m 3 )

45 44. If two people p talk simultaneously and each creates an intensity level of 45 db at a certain point, what is the total intensity level at this point? 1) 46 db 6) 65 db 2) 48 db 7) 70 db 3) 51 db 8) 80 db 4) 55 db 9) 90 db 5) 60 db 10) 100 db

46 45. A wave has a frequency of 60 Hz and a speed of 120 m/s. What are its period and wavelength? 1) 60 s, 2.0 m 6) s, 0.50 m 2) 60 s, 0.50 m 7) s, 2.0 m 3) 2.0 s, 5.0 m 8) 7,200 s, m 4) 2.0 s, 6.0 m 9) 7,200 s, 60 m 5) s, 16 m 10) s, 6.0 m

47 46. One of the notes on a piano has a fundamental frequency of 262 Hz and is produced by a wire that has a length of 0.69 m. The speed of sound in air is 343 m/s. Determine the ratio of the wavelength of the sound wave to the wavelength of the waves that travel on the wire. 1) ) 2.8 2) ) 3.5 3) ) 4.1 4) ) 6.9 5) ) 8.0

48 47. An organ pipe, open at one end, produces the middle A note (440 Hz) when sustaining a standing wave at its third harmonic. What is the length of the pipe? 1) m 6) 1.07 m 2) 0.37 m 7) 1.62 m 3) 0.58 m 8) 2.56 m 4) 0.78 m 9) 3.19 m 5) 0.97 m 10) 5.22 m

49 48. A spring is suspended d from the ceiling. When a 1-kg mass is hung at the bottom, the spring stretches by 9.8 x 10-4 m. When the 1- kg mass is pulled further down and let go, it oscillates up and down on the spring. What is its frequency of oscillation? 1) 2 Hz 6) 12 Hz 2) 4 Hz 7) 14 Hz 3) 6 Hz 8) 16 Hz 4) 8 Hz 9) 18 Hz 5) 10 Hz 10) 20 Hz

50 49. Light from the sun reaches the earth with an intensity it of 1,360 W/m2. The planet Jupiter is 5.2 times as far from the sun as is earth. With what intensity does sunlight reach Jupiter? 1) 0.75 W/m2 6) 25 W/m2 2) 1.5 W/m2 7) 50 W/m2 3) 3.0 W/m2 8) 100 W/m2 4) 6.0 W/m2 9) 200 W/m2 5) 12 W/m2 10) 400 W/m2

Choose the correct values for A,,T T and v from the options below: a) 9 cm, 20 cm, 0.

51 50. A wave traveling in the positive x direction has a frequency of 25.0 Hz as in the figure below. Find the amplitude (A), wavelength ( ), period (T), and speed (v) of the wave. Choose the correct values for A,,T T and v from the options below: a) 9 cm, 20 cm, 0.04 s, 500 cm/s b) 18 cm, 20 cm, 0.08 s, 500 cm/s c) 9 cm, 10 cm, 0.04 s, 250 cm/s d)18 cm, 10 cm, 0.04s, 250 cm/s A 18cm/2 9cm 10cm 2 20cm T = 1/f =1/25 s = 0.04 s v f 20cm 25Hz 500cm / s

52 51. A heat engine operating between a hot reservoir at 500 K and a cold reservoir at 200 K has an efficiency that is 70% of its maximum possible value. If it receives lx10 6 J heat energy from the hot reservoir in 25 minutes, it can do a quantity of work equal to a)6.3x10 5 J. T b)4.2x10 5 c J. a) emax ecarnot c)3.lxl0 5 T J. h 500 d)2.5x10 5 J. e)1.7x10 5 J. e e 0.7emax 0.7(0.6).42 W Q h 6 5 W e Q h.42 1x10 J 4.2x10 J

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Level 3 Physics, 2013

91523 915230 3SUPERVISOR S Level 3 Physics, 2013 91523 Demonstrate understanding of wave systems 2.00 pm Monday 25 November 2013 Credits: Four Achievement Achievement with Merit Achievement with Excellence