Read 255-262
and do starting on page 281,
#'s 7 10 11 12 14 16
Lab #2 due 12/1
Twenty Five ways to intimidate your professor.....
Bring a light bulb, hold it over your head whenever
you have to answer a question
Sit in the front row and spend the lecture filing your teeth into sharp points
Wear earmuffs, every few minutes ask the professor to
speak louder
Ask whether the first chapter will be on the test,
if the answer is no, rip the pages out of your
textbook
Become entranced with your first physics lecture,
declare that you intend to pursue a career in measurement and units
Sing your questions
Page through your textbook scratching each picture
and sniffing it
Hold up a piece of paper that says in large letters,
"CHECK YOUR FLY!"
Sit in the front, sniff suspiciously, and ask the
professor if he's been drinking
Feign an unintelligable accent and repeatedly ask,
"Vet ozzle haffen dee henvay?". Become agitated
when the professor cant understand you
Leave permanent markers by the dry erase board
Shout "WOW!" after every sentence
Watch the professor through binoculars
Relive your junior high days by putting chalk in
the erasers
Ask to introduce your "invisible friend" in the seat
beside you, and ask for one extra copy of each hand-out
When the professor turns on his laser pointer,
scream "AAAGH, MY EYES!"
Correct the professor at least ten times on the
pronunciation of your name, even if it's Smith,
claim the i is silent
Sit in the front row reading the professors graduate
thesis and snickering
In the middle of the lecture, ask the professor
if he believes in ghosts
Laugh heartily at everything the professor says,
snort when you laugh
Bring a typewriter, use it to take notes
If it's a math lecture, claim the professor misspelled
pi
Come to class wearing the same outfit as the professor,
call the professor a copycat
When the professor asks a question, raise your hand.
If the professor calls on you, point to someone
else and say "He knows"
Wear X-Ray specs, every few minutes ask the professor
to focus the overhead projector
(from Hijokes.com)
Mr Zenz
Chapter 1
1. 1.1 x 10^-17 kg
2. 13034 MeV or 2.09x10^-9J
3. 6.3 x 10^18J
4. 1.1 x 10^-12kg
5. 5.13MeV
6. The energy imparted produces mesons before the quark is isolated.
7. 6.5 x 10^-7 m and 6.5 x 10^-5 cm
8. 3.0 x 10^10 cm/s and 3.0 x 10^5 km/s
9a. 1.0 x 10^-10m
9b. 0.1 x 10^-6mm
9c. 0.1 x 10^-3 micrometers
10. 6.5 x 10^-1m
11. 2.300 x 10^12 watts
12. 4.73 x 10 ^-2m
13. 1.45 x 10^14 volts
14. 1.55 x 10^-9m
15. 10^3 jelly beans
16. 10^5 kg
17. 1062 golf balls
18. 10^9 gallons/year
19. 10^5m
20. 10^4 hairs
21. 10^12 kg
22. 10^6 ballons
23. 10^8 hot dogs
24. 10^8 pizzas
25. Determining the size of the atom
26. Increase the number of drops, and increasing the number of trials and averaging the results.
Chapter 1 Assessments
1. 3
2. 2
3. 3
4. 1
5. 1
6. 2
7. 3
8. 1
9. 2
10. 4
11. 3
12. 1
13. 3
14. 4
15. 3
16. 3
17. 3
18. 3
19. 3
20. 4
21. 2
22. 2
23. 1
24. 3
25. 4
26. C^2
27. quark and anti-quark
28. up,up, down
29. 0 quarks
30. three
31a. gravity
31b. weak nuclear
31c. electromagnetic
31d. strong
32. nuclear, weak
33. 1.66 x 10^-27kg
34. E=mc^2
Ep=(1.67 x 10^-27kg)(3.0 x 10^8m/s)^2=1.503 x 10^-10J
Ee=mc^2
=(9.11 x 10^-31kg) (3.0 x 10^8m/s)=8.2 x 10^-14J
35. E=mc^2
E= (1.67 x 10^-27kg)(3 x 10^8m/s)^2
E=1.503 x 10^-10J
E=1.503 x 10^-10J(1 MeV/1.6 x 10^-13J)=938.9 MeV=9.39 x 10^2 MeV
Chapter 2
1. 10(m/s)(3600s/1h)(1ft/0.305m)(1mi/5280ft)=22.4mi/hr
2a. R=5cm=5m,37degreees N of W
2b. R=10m,37degrees E of S
2c. R=18m, 26degrees N of E
2d. R=50m, N
2e. R=1200m, 34degrees E of S
2f. R=875cm, 65degrees S of W
3a. 5m@37degrees N of W
3b. 10m@37degrees E of S
3c. 17.9m @ 26.6degrees N of E
3d. 50m, N
3e. 1198m @ 56.6degrees S of E
3f. 877cm @64degrees S of W
6. 67.4m@67degrees S of E
7a. 362.8m@49.5degrees N of E
7b. 398.8m@5.4degrees W of N
8. One satellite will provide your distance from the satellite, two signals will give you two possible locations, the third is needed to narrow it down to a single location.
Chapter 2 Assessment
1. 2
2. 1
3. 4
4. 2
5. 1
6. 3
7. 1
8. 4
9. 3
10. 2
11. 1
12. 1
13.4
14. 1
15. 4
16. 3
17. 1
18. 4
19. 4
20. 2
21. 14.4km
22a. 50N
22b. 86.6N
23. 13.2m
24. 800m
25a. 192.8N
25b. 229.8N
26. Displacment occurs in straight line motion, distance does not have to, and therefore is greater than the displacement.
27. 4blocks, west
28. 30m,north
29. 4km
30.2blocks, east
31. 50N
32.500km
33. 8N
35a. Displacement=16.6km
35b. Distance=10km+5km+6km=21km
Chapter3
2.B
3.A
5. graph 1: m=4.17m/s
6. graph 2: m=0.1m/s
14. t=0s, t=3.5s, t=7s
15. FG and CE
16. AB
17. FG
18. no
19a. 89.6m/s
19b. 322.6km/hr
20 5sec
21a. 12mph/s
21b. 12mph/s
21c. 9.1mph/s
21d. 6.5mph/s
22. The acceleration is decreasing in magnitude, as time and velocity increase.
24. mph/sec
25. The car tops out in its acceleration and the rate decreases from there.
26. You would feel weightless when an elevator car descends rapidly.
Chapter 4
1a. 10N
1b. the ring would accelerate in the direction of the resultant
2a.min=0 N, max=20 N, vector 3=10 N, yes
2b. no
2c. no
3. 2m/s^2
4. yes, the block can be moving in dynamic equilibrium but there is no acceleration because there are no unbalanced forces
5. 0.2m/s^2; West
6. 547N
7. 9.83m/s^2
8a. 96 N
8b. the skier will accelerate
9a. 28.0N
9b. 0.57
9c. wet, the coefficient is closer to that given for wet concrete
10a. lubricating the surface
10b. polishing the surface
12. inverse
13. ma should be constant
14. F=ma
Chapter 4 Assessment
1. 1
2. 2
3. 2
4. 1
5. 3
6. 1
7. 3
8. 4
10. 1
11. 2
12. 2
13. 2
14. 4
15. 3
16. 1
17. 1
18. 1
19. 1
20. 4
21. 4
22. 1
23. 4
24. 48 N
25. 6000 N
26. the gorund pushing forward
27. 3
28. 10 N
30. 50 N
31. 10 N
32. 1.6 m/s^2
33. 0.49m/s^2
34. 6m/s^2
35. 4m/s^2
36. 1.99x10^20 N
37. 1.01x10^-47 N
38. 96 N
40. 4m/s^2;to the right
41. 1cm=8.0 N
43. 45 N
44. 27degrees N of E
45. 4.54m/s^2@27degrees N of E
Chapter 5
3a. Vh=0.46m/s Vv=0.47m/s t=.097s range=.044m
3b. Vh=121.6m/s Vv=79m/s t=16.1m/s range=1960m
3c. Vh=146.8km/h Vv=209.7km/h t=43.5s range=6280m
4a. 36degrees
4b. 7 iron
Chapter 5 Assessment
1. 4
2. 3
3. 3
4. 1
5. 4
6. 4
7. 1
8. 2
9. 4
10. 3
11. 4
12. 2.43m
13. 23.1m/s
14. 300m/s
15. 13m/s
16. 17m
17. decreases
18. the range decreases with decreasing angle of elevation because time in flight decreases
19. 34.6m/s
21. 20,70
22. sin20=cos70
Chapter 5 Assessment
1. 1
2. 1
3. 3
4. 2
5. 4
6. 1
7. 2
8. 2
9. 2
10. 4
11. east
12. 3m/s^2
13. 8m/s^2
14. 3900 N
15. B
16. t=3.50s
17. 34.3m/s
18a. t=3.50s;no change
18b. 34.3m/s;no change
19. 25.7m/s
20. Vh=30.6m/s Dh=76.5m
21. An increase in initial velocity and/or an increase in angle to forty-five degrees would increase the range.
23. 150 N
Chapter 6
1a. 18.3m/s
1b. 2900 N
2a. 2.03m/s
2b. 166 N*s
2c. 22960 N
2d. 1660 N
Chapter 6 Assessment
1. 3
2. 1
3. 3
4. 3
5. 3
6. 3
7. 2
8. 7500 N
9. 2400 N
10. 3.0x10^4N*S
11. 2.0x10^3kg
12. 4m/s
13. 128 kg m/s
14. 6600 N
15. 3m/s
16. 0.2m/s
17. 40M
18. 2.0x10^4 kg m/s
Chpater 7
1. increase in length
2. decrease in length
4. The acceleration due to gravity, and the length of the pendulum.
5. 6.9s
7. the mass and spring constant
Chapter 7 Assessment
1. 1
2. 3
3. 4
4. 2
5. 2 N/m
6. 40 N/m
7. 10 N/m
8. 50 N/m
9. 100 N/m
10. 2.5 N/m
11. R,U,Y]
12. W,X,Z
Chapter 8
1a. no
1b. yes
1c. no (if we neglect friction)
1d. yes
2. 130J
3. 100 J
4. 4700 J
5. 5 push-ups
6. 7.5 J
7. 2400 J
10. Speed is constant. No work done against friction. Mass is constant.
11. A=60 J
B=60 J
C=40 J
D= 20J
E= 0 J
12. The energy comes from the work done on the can.
13. The can imparts and impulse to the nail.
15. no
Chapter 8 Assessment
1. 4
2. 4
3. 1
4. 3
5. 4
6. 2
7. 1
8. 1
9. 1
10. 2
11. 9.8x10^3 J
12. 700 J
13. 250 J
14. 480 J
15. 5m/s
16. 213 W
17. 250 W
18. 2.7x10^4 N
19. 1
20. 500 N/m
21. 0.6 J
22. 2x10^-3 J
23. 2.4 J
24. 12 J
25. 4.0x10^6 J
26. 2380 J
27. 209 W
28. The student generates 71.2 W more power in the second trial.
29. The slope represents the object's velocity.
30. 1980 J
Chpater 9
1a. 1.00 m
1b. .200m
1c. 3.96m/s
1d. 0m
1e. 4.43m/s
1f. 1.00m
2a. 0 J
2b. 16 J
3. v=.271m/s
4. d=2.4m
5. .10
11. A=60 J B=60 J
CHpater 9 Assessment
1. 4
2. 2
3. 4
4. 1
5. 3
6. 1
7. 4
8. 3
9. 3
10. .20J
11. 2
12. 4
13. 4
14. 5.1m
15. 490J
16. decreases
17. 4
18. remains the same
19. 981J
20. 14m/s
21. At position A, the enercy is kinetic and at position B, the energy is elastic potential energy.
22. 2mgh/x^2
23. T=1.60s
24. d=17.4
25. 1.11x10^5 J
26. The kinetic energy of the car on the third hill is 1.75 times greater than when the car is on the second hill.
Chpater 10
1. The foil is attracted.
2. The foil is repeled.
3. The foil is attracted.
4. First there is attraction, then after touching no reaction.
5. The foil is repeled.
Chapter 10 Assessment
1. 3
2. 1
3. 1
4. 1
5. 2
6. 4
7. 4
8. 4
9. 2
10. 3
11. 4
12. 3
13. 3
14. 2
15. 2
16. 2
17. 4
18. 2
19. 168 V
20. 5.0 V
21. 3.2x10^-19C
22. 8x10^-19C
23. 4.8x10^-19C
24. 3.6N
25. 4
26. 250 N/C
27. 4 V
28. 2.0x10^7V
29. 2.7 N
31. 3
32. 3
33. 3
34. 3
36. 2.07x10^-1N
39. 2.304x10^-8N
40. 1.01x10^-47N
41. The electrostatic force is on the order of magnitude 10^39 N larger than the gravitational force.
42. 5.0x10^3 V/m
Chpater 13
1. The magnet has been polarized with two sets of poles.
Chpater 13 Assessment
1. 4
2. 4
3. 4
4. 3
5. 3
6. 1
7. 3
8. 2
9. 3
10. 2
11. 3
12. 1
13. 1
14. 3
15. 2
16. 3
18. 4
19. 4
21. Magnetism is caused by the movement of electrons spinning on their axis.
22. When in the influence of a magnetic field, a nail will lose its induced magnetic properties when the external field is removed.
25a. The magnet causes the protons in the hydrogen of water molecules to align.
25b. When the radio wave pulses are discontinued, the protons return to their original orientation, emitting a signal when they do.
25c. Diseased tissue contains more water than healthy tissue, thereby producing a stronger signal.
26a. Power loss goes as the square of both the potential and the current. However, it oges directly proportional with the resisitance at high current, but inversely proportional with resistance with high voltage.
26b. A step up transformer increases the voltage in the secondary. However, the current is reduced. This is due to the conservation of energy.
26c. A varying magnetic field is required to induce a voltage in a conducter. The magnetic field about a conductor with direct current is constant.
Chapter 14
1. 3
2. 3
3. longitudinal
4. A,B,D,C
5. B,A,C,D or B,C,A,D A=C
6. D,A,C,B or D,C,A,B
7. B,A,C,D or B,C,A,D
8. A and C
Chapter 14 Assessment
1. 1
2. 3
3. 2
4. 3
5. 2
6. 4
7. 3
8. 3
9. 2
10. 4
11. 1
12. 4
13. 1
14. 1
15. 2m
16. 0.5m
17. 5hz
18. 20hz
19. 90 degrees
20. 4.0x10^-3s
21. 2Hz
22. 0.5s
23. 5.0x10^-3s
24. 0.1s
25. 5m
26. 200Hz
27. 0.1m and 0.6m
28. 1.5
29. 90 degrees
29. 1.2cm +-0.2cm
30. 14.6cm+-0.2cm
31. the wavelength would decrese
32. 4
33. .4cm
34. .048m/s
35. The angle of incidence equals the angle of reflection.
Chapter 15
1. 7s
2. t=time for stone to fall and time for echo to return
t=19.2s
Chapter 15 Assessment
1. 1
2. 4
3. 1
4. 4
5. 1
6. 4
7. 3
8. 4
9. 1
10. 4
11. 2
12. 2x10^-15s
13. blue
14. 30cm
15. 1655m
16. 2
17. 858m
18. rsonance
19. C
20. 2.5x10^9Hz
21. The Doppler Effect is tha apparent change in frequency due to the relative velocity between source and observer.
22. A radar signal is sent toward the storm. The reflected wave is recorded from the strom. The comparison of many of these reflected waves would reveal a shortening time of return, indicating the storm is approaching.
23. .315s
24. As the motorcycle approaches the front (1st) jogger, the fronts of the sound waves will be foreshortened because of the relative motion of the cycle-jogger. The wave fronts reaching the jogger are interpreted by the jogger to have a frequency higher than the actual frequency of the cycle sound. The jogger behind (2nd) the motorcycle will make theopposite observation due to the lengthening of the wavelength due to the increasing relative distance.
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