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.? **
** Is the velocity of the water surface increasing, decreasing, etc.? **
** 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 **
** What do you think a graph of depth vs. time would look like? **
** 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? **
** Does this distance change at an increasing, decreasing or steady rate? **
** What do you think a graph of this horizontal distance vs. time would look like? **
** The contents of TIMER program as you submitted them: **
** The vertical positions of the large marks as you reported them, relative to the center of the outflow hole **
** Your table for depth (in cm) vs clock time (in seconds) **
** Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate? **
** Your description of your depth vs. t graph: **
** Your explanation and list of average average velocities: **
** 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? **
** **
This was received, but with no content. No problem here; just want to be sure you're didn't intend something different.
Phy202
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): **
I accidently submitted the Flow Experiment too early. I hit the enter key after typing my name.
I figured it was something like that. No problem.
** Is flow rate increasing, decreasing, etc.? **
decrease
** Is the velocity of the water surface increasing, decreasing, etc.? **
decrease
** 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 diameters remain the same but the flow pressure (due to the decreasing cylinder volume)decreases.
** Explain how we know that a change in velocity implies the action of a force: **
Change in velocity would be a change in acceleration. Force = the mass of an object times it acceleration. We can divide the force into the mass to find the accel.
** 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 and slower
** What do you think a graph of depth vs. time would look like? **
A curve, the curve decreases at a decreasing rate. y=depth, x=time
** 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? **
decreases
** Does this distance change at an increasing, decreasing or steady rate? **
decreasing
** What do you think a graph of this horizontal distance vs. time would look like? **
A curve, the curve decreases at a decreasing rate. y=depth, x=time
** The contents of TIMER program as you submitted them: **
1 167.2969 167.2969
2 169.7305 2.433594
3 172.2188 2.488281
4 175.2813 3.0625
5 178.293 3.011719
6 181.707 3.414063
7 185.5 3.792969
8 189.8242 4.324219
9 194.832 5.007813
10 202.2109 7.378906
11 213.9141 11.70313
** The vertical positions of the large marks as you reported them, relative to the center of the outflow hole **
232
212
192
172
152
132
112
92
72
52
32
12
** Your table for depth (in cm) vs clock time (in seconds) **
0,212
2.43,192
4.92,172
7.98,152
10.99,132
14.41,112
18.20,92
22.53,72
27.53,52
34.91,32
46.62,12
** Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate? **
Slower and slower
** Your description of your depth vs. t graph: **
The curve began to decrease at a slower rate, the time increased between the 20mm marks.
** Your explanation and list of average average velocities: **
V=delta d/ delta t
V= -8.23mm/s
V= -8.03mm/s
V= -6.54mm/s
V= -6.64mm/s
V= -5.85mm/s
V= -5.28mm/s
V= -4.62mm/s
V= -4.00mm/s
V= -2.71mm/s
V= -1.71mm/s
** The midpoints of your time intervals and how you obtained them: **
1
3.5
6
8
12
17
21
25
30
39
** Your table of average velocity of water surface vs. clock time: **
1, -8.23
3.5, -8.03
6, -6.54
8, -6.64
12, -5.85
17, -5.28
21, -4.62
25, -4.00
30, -2.71
39, -1.71
** Your description of your graph of average velocity vs clock time: **
Description?
** Your explanation of how acceleration values were obtained: **
Acceleration = delta v/ delta t
** 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? **
Decreasing,
Decreasing.
From what did you draw this conclusion?
** **
Good data, most answers are good. You need to add a couple of descriptions and explanations, which should be pretty easy to do.
&#Please see my notes and submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end). &#