Homework Answers
1. Results are not accurate . These are not close to bulls eye centre.
2. Results are precise because they are close to each other.
3. Results for part B are more accurate than part A.
4. Results are not precise because they are dispersed.
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Part 2: Accuracy vs Precision The objective of this exercise is to understand the difference between...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then drop a small ball from a 2-meter height (say, extending your arm above your head), aiming at the center of the target. The ball, hitting the carbon paper, will leave a mark on the bottom Bull's Bye sheet. You repeat this for a total of 10 drops. Then you draw a circle around these marks using a red pen 2) 3) Procedure- Part B...
CHE 120 Activity 2. Measurement Evaluations: Accuracy & Precision Associated Resources: Accuracy & Precision Handout Exercice...
CHE 120 Activity 2. Measurement Evaluations: Accuracy & Precision Associated Resources: Accuracy & Precision Handout Exercice #1: Two students weigh a powdered metal, 1: Wo students weigh a powdered metal and report the results of their multiple trials below. The exact (true/accepted) value for this mass is 8.72 9. Student #1: 8.72 g: 8.74 g: 8.70 g Student #2:8.50 g: 8.48 g: 8.519 a) Calculate the average mass from each set of data Average Set 1: _ Average Set 2:...
Experimental technique 5. [1pt] Which of the following statements are true for this experiment? E.g., enter...
Experimental technique
5. [1pt]
Which of the following statements are true for this experiment?
E.g., enter AB. If none are true, enter N. You have 4
tries.
Everyone must wear safety glasses.
For each launch angle, the projectile range is measured for one
speed setting.
Never look into the barrel of the launcher when it is
loaded.
The launch angle θ measured using the plumb line is the angle of
the launcher with respect to the vertical.
The projectile is...
I am very confused on number one of Part 1 of my lab analysis. This lab...
I am very confused on number one of Part 1 of my lab analysis.
This lab was focused on 2D collisions with the purpose to verify
the Law of Conservation of Momentum using straight and angled
collisions. I have attached a picture of the procedure from part 1,
my data, and the analysis question I am stuck on. Again, it is
question #1 on the Parts I and II Analysis section. Please
help!!
Part I: Mass of Ball A (gray...
DATA Sphere 1 (small, steel) 0.980 0.87 0.83 0.90 0.81 0.82 Sphere 2 (big, plastic) 0.980...
DATA Sphere 1 (small, steel) 0.980 0.87 0.83 0.90 0.81 0.82 Sphere 2 (big, plastic) 0.980 0.92 0.93 0.95 0.93 0.98 x (m) Measured time, trial 1,7(S) trial 2 trial 3 trial 4 trials Average time, la(s) V. (m/s) Measured range, trial 1, R (m) trial 2 trial 3 trial 4 trial 5 Average measured range, Rey (m) Height, h (m) Calculated time of fall, tall Theoretical range, Rhe Accuracy Raw X1000 0.585 0.569 0.570 0.585 0.580 0.541 0.562 0.513...
QUESTIONS 1. In your own words, explain how the components of a mixture are separated during...
QUESTIONS 1. In your own words, explain how the components of a mixture are separated during thin layer chromatography. Do not explain how to perform TLC; in other words do not explain the procedure. 2. Explain the purpose of the UV lamp in this experiment. 3. Why must you use pencil, not pen, when you make marks on the TLC plate? How do you know? Be sure to 4. Which substances were in the OTC pain reliever? discuss your Rr...
9. What do you think are most likely reasons for the difference between the experimental and...
9. What do you think are most likely reasons for the difference between the experimental and accepted values? 13 marks 10. Suppose that the centripetal force acting on an object in circular motion were doubled to a new value, and the object remained in a circular path with the same radius. How would the motion be affected? 13 marks Observations and Data; 17 marks time for 20 Centripe 1/T2 tal force (s2) Number of washers revolutions F/R (N/m) T (s)...
figure 2.3 EXPERIMENT Experimental Uncertainty (Error) and Data Analysis 2 Laboratory Report TI QUESTIONS 1. Read...
figure 2.3
EXPERIMENT Experimental Uncertainty (Error) and Data Analysis 2 Laboratory Report TI QUESTIONS 1. Read the measurements on the rulers in Fig. 2.9, and comment on the results Ruler 1 om 5 Ruler 2 cm 6 Ruler 3 TTm 6 Figure 2.9 2. Were the measurements of the block in part tb) of Procedure 2 all done with the same instrument? Explain. 3. Referring to the dart analogy in Fig. 2.3, draw a dart grouping that would represent poor...
i need help with part B Vibrating String Experiment Objective To study the factors affecting the...
i need help with part B
Vibrating String Experiment Objective To study the factors affecting the velocity of waves in a stretched string Apparatus Linear transducer, function generator, string, meter stick, muss set, table clamp with pulley. Optional: strobe light, Part A Attach one end of a string to the motor and pass the other end of the string over a pulley about 1.5 m away. Set the frequency to 120 Hz. Refer to the figure below to make sure...
Suplementary Questions Carbon Dioxide Conclusions 1. Can a candle burn in carbon dioxide? Does ca...
Suplementary Questions Carbon Dioxide Conclusions 1. Can a candle burn in carbon dioxide? Does carbon dioxide burn? 2. What happened to the burning candle? Could carbon dioxide be used as a fire extinguisher? 3. Why should you release the carbon dioxide into the bottom of the cup? Hydrogen Conclusions 1. What difference did you notice between Parts 1 and 2 in the hydrogen experiment? Explain. 2. What is the purpose of the soap solution? 3. Why should extreme care be...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then drop a small ball from a 2-meter height (say, extending your arm above your head), aiming at the center of the target. The ball, hitting the carbon paper, will leave a mark on the bottom Bull's Bye sheet. You repeat this for a total of 10 drops. Then you draw a circle around these marks using a red pen 2) 3) Procedure- Part B...
CHE 120 Activity 2. Measurement Evaluations: Accuracy & Precision Associated Resources: Accuracy & Precision Handout Exercice #1: Two students weigh a powdered metal, 1: Wo students weigh a powdered metal and report the results of their multiple trials below. The exact (true/accepted) value for this mass is 8.72 9. Student #1: 8.72 g: 8.74 g: 8.70 g Student #2:8.50 g: 8.48 g: 8.519 a) Calculate the average mass from each set of data Average Set 1: _ Average Set 2:...
Experimental technique
5. [1pt]
Which of the following statements are true for this experiment?
E.g., enter AB. If none are true, enter N. You have 4
tries.
Everyone must wear safety glasses.
For each launch angle, the projectile range is measured for one
speed setting.
Never look into the barrel of the launcher when it is
loaded.
The launch angle θ measured using the plumb line is the angle of
the launcher with respect to the vertical.
The projectile is...
I am very confused on number one of Part 1 of my lab analysis.
This lab was focused on 2D collisions with the purpose to verify
the Law of Conservation of Momentum using straight and angled
collisions. I have attached a picture of the procedure from part 1,
my data, and the analysis question I am stuck on. Again, it is
question #1 on the Parts I and II Analysis section. Please
help!!
Part I: Mass of Ball A (gray...
DATA Sphere 1 (small, steel) 0.980 0.87 0.83 0.90 0.81 0.82 Sphere 2 (big, plastic) 0.980 0.92 0.93 0.95 0.93 0.98 x (m) Measured time, trial 1,7(S) trial 2 trial 3 trial 4 trials Average time, la(s) V. (m/s) Measured range, trial 1, R (m) trial 2 trial 3 trial 4 trial 5 Average measured range, Rey (m) Height, h (m) Calculated time of fall, tall Theoretical range, Rhe Accuracy Raw X1000 0.585 0.569 0.570 0.585 0.580 0.541 0.562 0.513...
QUESTIONS 1. In your own words, explain how the components of a mixture are separated during thin layer chromatography. Do not explain how to perform TLC; in other words do not explain the procedure. 2. Explain the purpose of the UV lamp in this experiment. 3. Why must you use pencil, not pen, when you make marks on the TLC plate? How do you know? Be sure to 4. Which substances were in the OTC pain reliever? discuss your Rr...
9. What do you think are most likely reasons for the difference between the experimental and accepted values? 13 marks 10. Suppose that the centripetal force acting on an object in circular motion were doubled to a new value, and the object remained in a circular path with the same radius. How would the motion be affected? 13 marks Observations and Data; 17 marks time for 20 Centripe 1/T2 tal force (s2) Number of washers revolutions F/R (N/m) T (s)...
figure 2.3
EXPERIMENT Experimental Uncertainty (Error) and Data Analysis 2 Laboratory Report TI QUESTIONS 1. Read the measurements on the rulers in Fig. 2.9, and comment on the results Ruler 1 om 5 Ruler 2 cm 6 Ruler 3 TTm 6 Figure 2.9 2. Were the measurements of the block in part tb) of Procedure 2 all done with the same instrument? Explain. 3. Referring to the dart analogy in Fig. 2.3, draw a dart grouping that would represent poor...
i need help with part B
Vibrating String Experiment Objective To study the factors affecting the velocity of waves in a stretched string Apparatus Linear transducer, function generator, string, meter stick, muss set, table clamp with pulley. Optional: strobe light, Part A Attach one end of a string to the motor and pass the other end of the string over a pulley about 1.5 m away. Set the frequency to 120 Hz. Refer to the figure below to make sure...
Suplementary Questions Carbon Dioxide Conclusions 1. Can a candle burn in carbon dioxide? Does carbon dioxide burn? 2. What happened to the burning candle? Could carbon dioxide be used as a fire extinguisher? 3. Why should you release the carbon dioxide into the bottom of the cup? Hydrogen Conclusions 1. What difference did you notice between Parts 1 and 2 in the hydrogen experiment? Explain. 2. What is the purpose of the soap solution? 3. Why should extreme care be...
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