In this lab there were five different stations. For the first station we had to determine an unknown mass and the percent difference. To find the unknown mass we set up the equation Fleft*dleft = Fright*dright. We then substituted in the values (26.05 N * 41cm = 34cm * x N) and solved for Fright to get (320.5g). To determine the percent difference we used the formula Abs[((Value 1 - Value 2) / average of 1 & 2) * 100], substituted the values (Abs[((320.5 - 315.8) / ((320.5 + 315.8) / 2)) * 100]) and solved to get (1.58%). For the second station we had to determine the distance required to balance the system and the percent difference. To find the unknown distance we set up the equation Fleft*dleft = Fright*dright. We then plugged in the values (11.35 N * x cm = 48cm * …show more content…
For example, at the 1st station the ruler was slightly off balanced. This could have affected the results because we could have used inaccurate quantities when determining our answer. Another example would be the clips at the ends of the board in station 5. Since they jutted out slightly at the end it added some length to the board. This most likely affected the angle between the board and string. Therefore we then could have used inaccurate quantities when determining our answer. Another source of error that could have happened would be failure to account for a factor. An example of this would be station number four. To determine the weight of the board we used a leaning tower which had a “hidden” weight. When determining the distance from this leaning tower to the rotation point we didn’t take into consideration where that “hidden” weight would be and instead just measured from its center. Since we didn’t measure the distance from the point of the “hidden” weight it would have resulted in an inaccurate measurement. This, in turn, would have then resulted in inaccurate calculations leading to an inaccurate
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Our lab results on all three data table experiments had a percent error less than 5 percent. When examining these results I can be almost certain it was not systematic error due to the fact that a major percent error was not detected on every trial that was run in each of the three tables. With there being some percent error there is the possibility for random error which are from unknown factors, which could come from impact of outside forces like the air track interfering with the acceleration of the cart. Beings that this was the first lab for my lab partners and I were working there was room for slight personal errors with our use of the computer program as well as the lab equipment.
The potential sources of error for a skinfold measurement are the evaluator may not obtain just the adipose tissue but part of the muscle as well, which will decrease accuracy. Also, the evaluator may not obtain all of the adipose tissue present, which will decrease accuracy of measurements as
In this lab I concluded that the mass (kg) was the independent and the weight (N) was the dependent, because when you read the spring scale it depended on the amount of mass that was hanging from the spring scale. When I made my graph the slope relation was the amount of mass compared to the amount of weight. The more mass we put on the more it weighed. If we use the equation to find slope (Y2-Y1)/ (X2-X1), using my first point on scale 1(2, 0.2), and my last point of scale 1 (0.16, 0.02). I get 0.2- 2= -1.8 divide by 0.02- 0.16= -0.14 and get a slope of 12.8.
More trail could have been performed to try to get more accurate data, but after sometime habitation or expectation would have occurred and the data would be affected by it. Another issue the accuracy of the measurements. It’s important to start each trail on the same point, however we did not indicate the exact starting point. This most likely didn’t cause that much of an issue, but it’s always something that can hinder the measurements accuracy. Next time it would be better to make a mark of a starting point on each of the body parts
We had been using a tape measure that had a metal loop on the bottom. We believed that the metal loop was for accessory and was not to be used to measure with. However, we learned that the bottom of the metal loop was the 0 cm mark. After learning this we had to remeasure all of our data due to this
The floor is decorated with tiles that are the same length all around the room. We noticed that instead of lining up meter sticks along the wall, just measuring the tiles and multiplying how many tiles were along the wall would be a faster and more accurate way. We first had to measure the length of the tiles on the ends of the wall because they were cut off by the wall, therefore having a different length than the other tiles. The uncertainty for those were 0.5 millimeters because we only had to make one judgment since we had the meter stick up against the wall.
Birthdate Relationship Compatibility: How It Works How compatible are you with the person you're with or the person you plan to be with? It would be so nice to know how well you’ll get along, regardless of the situation, or whether or not you're in the same wavelength. Well, the answer is in the stars.
Purpose: The purpose of this experiment is to investigate the changes in temperature one meter above the ground along an environmental gradient of one meter. The data will be take using increments of one meter from a wall. Introduction: An environmental gradient is a gradual change in abiotic factors through space (or time). Environmental gradients can be related to factors such as altitude, temperature, depth, ocean proximity and soil humidity.
All the experiment was depending on fortune and luck and can not be successful at all because the performers do not have proper direction to perform the experiment. For the experiment, workers should have proper equipment, standardise and should have power to do work their own way. It is also concluded that the quality of production might be great in future by use the present statics and create a quality control chart and solve the problem in specific problems which effects the project. The common wisdom is that if only people did not make so many mistakes, there would not be so many problems. But even with the variation contributed by the people reduced to zero, there are still too many red
So the moles of bases and acids become same and as a result we can obtain equation which is given below to figure out unknown concentration of acid. C_acid*V_acid=C_base*V_base Finally, the obtained results from experiment compared with the theoretical values to sure from the punctuality of
Finally using the last column (mass curve ordinate) and stations draw the mass-curve. Hints: see the following example. You can get the whole Excel file in the following link: http://www.webs1.uidaho.edu/niatt_labmanual/Chapters/roadwaydesign/theoryandconcepts/Earthwork.htm 5. Write a short report on your