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 think the rate of flow would decrease because there is less pressure acting on the liquid as it liquid decreases
Is the velocity of the water surface increasing, decreasing, etc.?
well the bouy would remain on top of the liquid. I would think that as more liquid leaves the the velocity of the sureface would slow.
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?
if it is the same size cylinder and it has a bigger diameter then it would hold more liquid. The diameter of the hole is what causes the liquid to escape from the cylinderthe larger the hole the faster the water escapes the smaller the hole the slower the liquid leaves The velcoity of the exitiing water is also dependent on the size of the hole and the diameter of the cylinder. The velocity of the water surface is also dependent on the all of the others.
Explain how we know that a change in velocity implies the action of a force:
When the water is in the cylinder without coming out there is a force that is acting on it trying to make it go out. since it is not going out it has 0 change in velocity. However when the liquid starts to leave the force that is acting on the liquid pushes the liquid out of the cylinder and the velocity is now increasing
Does the depth seem to be changing at a regular rate, at a faster and faster rate, or at a slower and slower rate
the depth seems to be chagning at a slower and slower rate. If the pictures were clearer you could compare the depths to each other at the time intervals more clearly then you can right now. which you could then see the velcoity of the water.
What do you think a graph of depth vs. time would look like?
I think that the graph would show that as time increases the depth decreases.
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?
the horizontal distance decreases as time time increases
Does this distance change at an increasing, decreasing or steady rate?
this distance changes at a steady rate
What do you think a graph of this horizontal distance vs. time would look like?
the horizontal distance will decrease as the time increase. the line on the graph would decrease from the start time to the end time at a steady rate
The contents of TIMER program as you submitted them:
1 39.34375 39.34375
2 40.54688 1.203125
3 41.5 .953125
4 42.625 1.125
5 43.65234 1.027344
6 44.84375 1.191406
7 46.23047 1.386719
8 47.80859 1.578125
9 49.32813 1.519531
10 51.30859 1.980469
11 53.79688 2.488281
12 58.76172 4.964844
The vertical positions of the large marks as you reported them, relative to the center of the outflow hole
0.5
2.5
4.5
6.5
8.5
10.5
12.5
14.5
16.5
18.5
20.5
22.5
Your table for depth (in cm) vs clock time (in seconds)
0,22.5
1.203125,20.5
.953125,18.5
1.125,16.5
1.027344,14.5
1.191406,12.5
1.386719,10.5
1.578125,8.5
1.519531,6.5
1.980469,4.5
2.488281,2.5
4.964844,0.5
Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate?
well if my clicking for the timer were more consistant then I think that my data would show that as time went on the depth changed at a slower rate
Your description of your depth vs. t graph:
many of the points do not correspond to the line. However, the line is increasing. As the time increases the distance decreases.
Your explanation and list of average average velocities:
average velocity is the change in distance divided by the change in time.
0
17.039
19.410
14.66
14.114
10.492
7.572
5.386
4.278
2.272
1.005
0.102
The midpoints of your time intervals and how you obtained them:
0.602
0.477
0.5625
0.514
0.596
0.693
0.789
0.760
0.990
1.244
2.482
I took the time interval that was obtained in the time interval program and divided each by 2
Your table of average velocity of water surface vs. clock time:
0,0
0.602,17.039
0.477,19.410
0.5625,14.66
0.514,14.114
0.596,10.492
0.693,7.572
0.789,5.386
0.760,4.278
0.990,2.272
1.244,1.005
2.482,0.102
Your description of your graph of average velocity vs clock time:
the graph of the average velcoity vs. clock time as the midpoint clock time increases the average velocity decreases
Your explanation of how acceleration values were obtained:
the average acceleration is the average velocity divided by the change in time.
0
28.3
40.7
26.06
27.46
17.6
10.9
6.8
5.6
2.29
0.808
0.041
Your acceleration vs clock time table:
0.602,,28.3
0.477,40.7
0.5625,26.06
0.514,27.46
0.596,17.6
0.69310.9
0.789,6.8,
0.760,5.6
0.990,2.29
1.244,0.808
2.482,0.041
According to the evidence here, is acceleration increasing, decreasing, staying the same or is in not possible to tell?
that the acceleration is decreasing for the most part.
i think that the acceleration of the water surface is decreasing
This looks good. After the due date we will be discussing this experiment further via an online forum.
Your responses have been reviewed and everything looks good.
Please let me know if you have any questions related to this orientation assignment.