Your 'flow experiment' 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 initial message (if any): **
** Is flow rate increasing, decreasing, etc.? **
decrease
** Is the velocity of the water surface increasing, decreasing, etc.? **
remain the same
** How would the velocity of the water surface, the velocity of the exiting water, the diameter of the cylinder and the diameter of the hole be interrelated? **
** Explain how we know that a change in velocity implies the action of a force: **
** Does the depth seem to be changing at a regular rate, at a faster and faster rate, or at a slower and slower rate **
slower rate
** What do you think a graph of depth vs. time would look like? **
it would start steep and then level out going down
** Does the horizontal distance (the distance to the right, ignoring the up and down distance) traveled by the stream increase or decrease as time goes on? **
decrease
** Does this distance change at an increasing, decreasing or steady rate? **
it changes at a steady rate
** What do you think a graph of this horizontal distance vs. time would look like? **
it will be steep at the beginning and then level out going up
** The contents of TIMER program as you submitted them: **
1 113.0703 113.0703
2 113.4883 .4179688
3 113.9102 .421875
4 114.4102 .5
5 114.8008 .390625
6 115.3164 .515625
7 115.7031 .3867188
8 116.1406 .4375
9 116.6563 .515625
10 117.3281 .671875
11 117.8711 .5429688
12 118.3086 .4375
13 118.8555 .546875
14 119.6055 .75
15 120.1992 .59375
16 120.8359 .6367188
17 121.7578 .921875
18 122.6484 .890625
19 123.7227 1.074219
20 124.7539 1.03125
21 126.5781 1.824219
22 130.2305 3.652344
** The vertical positions of the large marks as you reported them, relative to the center of the outflow hole **
0mm
8mm
16mm
24mm
32mm
40mm
48mm
56mm
64mm
72mm
80mm
88mm
96mm
104mm
112mm
120mm
128mm
136mm
144mm
152mm
160mm
** Your table for depth (in cm) vs clock time (in seconds) **
113.0703, 0mm
113.4883, 10
113.9102, 20
114.4102, 30
114.8008, 40
115.3164, 50
115.7031, 60
116.1406, 70
116.6563, 80
117.3281, 90
117.8711, 100
118.3086, 110
118.8555, 120
119.6055, 130
120.1992, 140
120.8359, 150
121.7578, 160
122.6484, 170
123.7227, 180
124.7539, 190
126.5781, 200
130.2305, 210
** Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate? **
regular
** Your description of your depth vs. t graph: **
it starts high in the left side and goes down sharply at the begging and levels out as time goes
** Your explanation and list of average average velocities: **
19.13
19.00
16.00
2.51
15.53
20.72
18.30
15.53
11.90
14.76
18.30
14.65
10.66
13.49
12.57
8.68
8.98
7.47
7.76
4.39
2.19
I measured the distance between the intervals and divided it by the time difference.
** The midpoints of your time intervals and how you obtained them: **
** Your table of average velocity of water surface vs. clock time: **
** Your description of your graph of average velocity vs clock time: **
** Your explanation of how acceleration values were obtained: **
** Your acceleration vs clock time table: **
** According to the evidence here, is acceleration increasing, decreasing, staying the same or is in not possible to tell? **
my results show that the acceleration is decreasing but they are not accurate.
It is not completely constant it varies.
** **
1 hr
There is a definite decreasing trend and a graph of velocity vs. midpoint clock time will tell you if the trend appears linear.
However you have good data, and your work here is sufficient to your stated grade goal.