Your 'energy conversion 1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your optional message or comment: **
I did have sufficient time to complete this lab, however, I could not get it set up correctly due to some technicalities with space therefore I am sorry it is late.
** How far and through what angle did the block displace on a single trial, with rubber band tension equal to the weight of two dominoes? **
31.8, 25
The block moved 31.8 cm and finished at an angle of approximately 25 degrees.
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of two dominoes: **
39.8, 15
37.6, 5
49.1, 15
38.6, 20
30.8, 5
The first number corresponds to how many centimeters that the block traveled and the second number corresponds to the number of degrees the angle appeared to be.
** Rubber band lengths resulting in 5 cm, 10 cm and 15 cm slides: **
10.2
12.5
11.3
These numbers correspond to the length of the rubberband when it resuls in 5 cm, 10 cm and 15 cm slides.
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of four dominoes: **
20.7, 10
26.4, 3
26.4, 5
27.8, 3
29.6, 5
The first number corresponds to the number of cm the block traveled and the number of degrees its final position resembled.
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of six dominoes: **
24.0, 10
30.5, 5
35.0, 25
38.0, 10
43.2, 10
The first number corresponds to the number of cm the block traveled and the number of degrees its final position resembled.
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of eight dominoes: **
46.5, 8
67.0, 20
34.0, 3
51.2, 8
42.4, 25
The first number corresponds to the number of cm the block traveled and the number of degrees its final position resembled.
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of ten dominoes: **
78.0, 25
33.2, 15
31.5, 1
31.0, 5
45.7, 15
The first number corresponds to the number of cm the block traveled and the number of degrees its final position resembled.
** Rubber band length, the number of dominoes supported at this length, the mean and the standard deviation of the sliding distance in cm, and the energy associated with the stretch, for each set of 5 trials: **
39.18, 6.555, 291.7
26.18, 3.333, 130.2
34.14, 7.311, 221.5
48.22, 12.25, 447.8
43.88, 20.00, 365.8
.19 * `ds ^2 yields the energy. The units are N * cm.
** Slope and vertical intercept of straight-line approximation to sliding distance vs. energy, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature: **
14.4, 100
N * cm
There appears to be some curvature in the line. The points are fairly close.
The curvature indicates an upward concavity.
** Lengths of first and second rubber band for (first-band) tensions supporting 2, 4, 6, 8 and 10 dominoes: **
28.6, 450
N * cm
The points are fairly close about the line which is a curve.
There is a upward concavity in the curvature.
** Mean sliding distance and std dev for each set of 5 trials, using 2 rubber bands in series: **
12.2, 13.3
12.6, 13.7
12.7, 13.7
15.3, 14.8
15.8, 15.1
** Slope and vertical intercept of straight-line approximation to sliding distance vs. energy, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature: **
76.54, 5.342
54.68, 4.899
68.30, 6.489
95.86, 13.831
93.39, 17.256
** 1-band sliding distance and 2-band sliding distance for each tension: **
39.18, 76.54
26.18, 54.68
34.14, 68.30
48.22, 95.86
43.88, 93.30
** Slope and vertical intercept of straight-line approximation to 2-band sliding distance vs. 1-band sliding distance, units of slope and vertical intercept, description of the graph and closeness to line, any indication of curvature: **
2.2, 30
cm * cm
The points are fairly close and there is a slight curvature in the relationship.
The graph forms an upward concavity.
** Discussion of two hypotheses: 1. The sliding distance is directly proportional to the amount of energy required to stretch the rubber band. 2. If two rubber bands are used the sliding distance is determined by the total amount of energy required to stretch them. **
I believe this experiment definitely supports the above hypothesis.
** How long did it take you to complete this experiment? **
2 hours
** Optional additional comments and/or questions: **
&#Your work looks very good. Let me know if you have any questions. &#