Your work on flow experiment 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.?
I would expect it to remain the same
Is the velocity of the water surface increasing, decreasing, etc.?
I think it would also 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?
the diameter of the hole would show how much water is able to escape through the hole and if it is a little hole i think the velocity would be slower.
Explain how we know that a change in velocity implies the action of a force:
A change in this velocity from the diameter of the actual cylinder going to and through the little hole implies how fast the liquid is going to go through the hole.
Does the depth seem to be changing at a regular rate, at a faster and faster rate, or at a slower and slower rate
changing at a regular rate
What do you think a graph of depth vs. time would look like?
I think a graph of depth vs. time would look like it was decreasing at a constant rate
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?
It decreases as time goes on
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 would also be decreasing at a constant rate
The contents of TIMER program as you submitted them:
1 163.7651 163.7651
2 166.2813 2.516113
3 168.062 1.780762
4 170.1094 2.047363
5 172.2651 2.155762
6 174.4063 2.141113
7 176.7344 2.328125
8 179.5151 2.780762
9 182.187 2.671875
10 185.8281 3.641113
11 190.2651 4.437012
12 199.6724 9.407227
13 201.3901 1.717773
The vertical positions of the large marks as you reported them, relative to the center of the outflow hole
1.5 cm
3.7 cm
5.6 cm
7.4 cm
9.3 cm
11.2 cm
13.1 cm
14.9 cm
16.8 cm
18.6 cm
20.5 cm
Your table for depth (in cm) vs clock time (in seconds)
0, 20.5
2.51, 18.6
1.78, 16.8
2.04, 14.9
2.15, 13.1
2.14, 11.2
2.32, 9.3
2.78, 7.4
2.67, 5.6
3.64, 3.7
4.43, 1.5
Your table shows time intervals, not clock times. Clock time starts at 0 and keeps increasing. The increases in clock times are the time intervals. So your first few clock times would be 0, 2.51, 4.29, 6.33, etc..
Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate?
It doesn't support it fully. The depth is changing at a faster then slower rate.
Your description of your depth vs. t graph:
The graph would be decreasing at a increasing rate.
Your explanation and list of average average velocities:
I divided the distance by time.
It looks like you divided changes in depth by time intervals. To avoid confusion, it's a good habit to never use the word 'time' without a modifier of some sort to indicate exactly what you mean--e.g., clock time, time interval, average clock time, etc..
8.16
10.45
8.24
6.93
6.12
4.83
3.35
2.77
1.54
.83
.16
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 data indicates the the acceleration of the water is decreasing.
I think the the acceleration would be decreasing.
You didn't answer the last few questions, and you gave time intervals instead of clock times in your table, but most of the answers you did give were good.