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: **
** 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? **
1.7,0
travel distance and angle of dominoes for first trial
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of two dominoes: **
1.7,0
1.6,0
1.8,0
1.7,0
1.8,0
** Rubber band lengths resulting in 5 cm, 10 cm and 15 cm slides: **
8.0,8.3,8.9
the approx length of the rubber band to get 5,10, and 15 cm of slide
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of four dominoes: **
2.6,0
2.7,0
2.6,0
2.7,0
2.6,0
sliding distance and roatation for first trial
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of six dominoes: **
3.7,0
4.0,0
3.8,0
3.9,0
3.8,0
sliding distance and rotation for 2nd trial
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of eight dominoes: **
5.8,5
5.9,0
6.0,5
5.9,0
5.8,0
sliding distance and roatation
** 5 trials, distance in cm then rotation in degrees, with rubber band tension equal to the weight of ten dominoes: **
9.0,5
8.5,5
9.5,5
8.7,5
9.2,5
sliding distance and rotation
** 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: **
7.3,2,1.75,.055.16
7.6,4,2.64,.055,.225
7.8,4,3.84,.114,.441
8.0,8,5.88,.084,.729
8.2,10,8.98,.396,1.09
energy is reported in N*cm and was calculated using the formula 1/2*K(1.8N/cm)*ds(amount of stretch)^2
** 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: **
.139,-.1
ratio,N*cm
very linear
** Lengths of first and second rubber band for (first-band) tensions supporting 2, 4, 6, 8 and 10 dominoes: **
.143,-.12
ratio,N*cm
points were close to line very linear
** Mean sliding distance and std dev for each set of 5 trials, using 2 rubber bands in series: **
7.4,7.4
7.6,7.6
7.8,7.9
8.0,8.1
8.2,8.3
** 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: **
3.4,.14
5.2,.14
7.6,.21
10.4,.18
18.2,.63
** 1-band sliding distance and 2-band sliding distance for each tension: **
1.7,3.4
2.64,5.2
3.85,7.6
5.9,10.4
8.98,18.2
** 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: **
2.04,0,0
ratio,cm
close to linear with good fit
** 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. **
strongle supports the linear relationship between energy and sliding distance
** How long did it take you to complete this experiment? **
3 hours
** Optional additional comments and/or questions: **
Very good work, and good results.