The drop height measured to be 45cm. The height was the same to all trials. When the heavier mass was released by the group member, another people used the stop watch to measure the time, three times were measured for each drop. Then average the results. The second trial we chose m1 for 30g and m2 for 20g.
Rate= k[HSO3-]x[IO3-]y = 0.0005sec-1[HSO3-]1[IO3-]1 Table 2: Time per experiment Experiment | Mixing | 1st trial time (s) | 2nd trial time (s) | Avg time(s) | 1 | #1 and #6 | 37.56 | 33 | 35.28 | 2 | #2 and #7 | 40.54 | 38.53 | 39.535 | 3 | #3 and #8 | 51.08 | 55.79 | 53.435 | 4 | #4 and #9 | 77.00 | 73.50 | 75.25 | 5 | #5 and #10 | 203.00 | 149.19 | 176.095 | Table 3: Calculate moles of HSO3- Test tube numbers being mixed | Volume of HSO3- used | Moles of HSO3-Moles=molarity x liters | #1 and #6 | 10 mL | 0.01 L x 0.001 M = 0.00001 moles | #2 and #7 | 10 mL | 0.01 L x 0.001 M = 0.00001 moles | #3 and #8 | 10 mL | 0.01 L x 0.001 M = 0.00001 moles | #4 and #9 | 10 mL | 0.01 L x 0.001 M = 0.00001 moles | #5 and #10 | 10 mL | 0.01 L x 0.001 M = 0.00001 moles | Table 4: Calculate the rate of IO3- IO3-(aq) + 3HSO3-(aq) I-(aq) + 3SO42-(aq) + 3H+ (aq) Test tube being mixed | Moles of HSO3- | Moles of IO3- reacting | Conc. of IO3- (volume is 20 mL) | Rate of IO3- (conc./avg time) | #1 and #6 | 0.00001 | 3.33 x 10-6 | 1.67 x 10-4 | 1.67 x
The wood block was turned on its side. 2. The entire process from Part 1 was repeated three times and the force of kinetic and static friction for each trial was recorded. Part 3 1. The experiment then called for the force of kinetic and static friction for the glass surface and sandpapered surface blocks.
Then, we utilized the Vernier caliper to measure the diameter and length of a provided cylinder three times. Lastly, we used the micrometer calipers to measure a provided block. We also recorded the zero reading of the micrometer three times prior to measuring the sides of the rectangular. Four readings of each side were taken, the largest, intermediate, and narrowest sides. The method used to convert the measurement in inches to a decimal was to take the recording of the number plus the fraction out of 8 and add it to the nearest tenth of the smallest division.
Second Law of Motion: The Validated Truth Purpose: The validation of Newton’s second law of motion, stating that ___________ is the goal of the experiment. This will be done by variations to both the accelerating force and the mass of the car. Materials: |[pic]Low friction cart |Low friction track |Pulley | |string |motion sensor |lab quest system | |weight hanger |measured weights |triple beam balance | Procedure: 1. Begin by placing the track on level horizontal surface. 2.
To make this experiment more accurate and reliable, pieces of plastocine were added to each block to get them to the same weight. Next a distance was measured out and marked using a piece of plasticine on each end. The same person was used to drag the force metre attached to the block of wood insuring their hand was inline with the block of wood and flat onto the table. The same person was used to take the reading when the block reached the end point and was recorded. The experiment was repeated 3 times for each block with different material.
Mesivta Yesodei Leiman, Doniyale Physics 12/26/2013 Spring Lab Aim: How to find the spring constant. Materials: The materials we used were a meterstick, ping-pong table, 3 different springs, 200 g, 100 g and 50 g masses. Procedure: Ginzy and I hooked one spring onto the ping-pong table, measured the height of the bottom of the spring then we put 5 different masses on the spring (using combinations like 50 and 100) and measured the height of the bottom of the spring with the weight using a meterstick we did this for each of 3 springs. I multiplied the masses by 9.8 to get the Fs and subtracted the height from 52 to get x (which is the elongation) I divided Fs by x for each height to get 5 k values for each spring I then used an average. Observations: Ginzy and I perceived different measurements on the meterstick due to me being significantly shorter than him.