Name: Robert Christopher Date: 16/2/2011 ID: 0670000687 COMPARISON OF ARTERY AND VEIN Raw Data Table 1: Below are the results of the experiment completed through cutting down the vein and artery into a ring-like shape. A 10g-50g of mass is used to suspend the artery and vein; and measured it with a 1-meter ruler standing 90˚ on the table to distinguish how long it stretches with a specific mass weight. Average Length ± 0.05g/mm | Mass ± 0.05mm/g | Artery | Vein | | Trail 1 | Trial 2 | Average | Trial 1 | Trial 2 | Average | 0g | 393 | 377 | 385 | 370 | 374 | 372 | 10g | 392 | 376 | 384 | 368 | 372 | 370 | 20g | 391 | 375 | 383 | 366 | 370 | 368 | 30g | 390 | 374 | 382 | 364 | 368 | 366 | 40g | 389 | 373 | 381 | 362 | 366 | 364 | 50g | 388 | 372 | 38 | 360 | 364 | 362 | Data Presentation Table 2: Below are the results of the artery and vein’s length difference in mm. These results were known when the average results from the two trials were calculated. The results can be calculated with the following formula: "trial 1 + trial 2; then divide the result by 2 to get the average mean results”.
KPD. They were then given another task to do to stop them rehearsing the trigram. Their recollect was tested after 3,6,9,12,15,18 seconds and the recall had to be in correct order to count. They discovered that 80% of participants recalled the trigrams very well after 3 seconds, but this dropped dramatically to 10 % after 18 seconds. The supporting evidence for the duration of LTM was brought about by Ebbinghaus who tested his memory using nonsense syllables after delays ranging from 20 minutes to 31 days later and found that a large proportion of the information in LTM was lost comparatively quickly, i.e.
What does this result mean? The t ratio of -0.65 represents the smallest relative difference between the pretest and 3 months outcomes. This ratio does not have an asterisk next to it in the table which according to the footnotes the asterisk is said to represent p < 0.05 the least stringent acceptable value for statistical significance. 4. What are the assumptions for conducting a t-test for dependent groups in a study?
When the students arrived to the classroom, quickly they measured the mass of the eggs, and discussed about the solutions. This is a way to demonstrate osmosis. Experiment: In the experiment, students needed to fill four jars; two with distilled water, one with vinegar, and other one with syrup. One of the jars with distilled water was to remove the shell of the egg; this process had to be done two more times, since the students are using three eggs. Students need to put the eggs, after their shells have been removed, in the corresponding jars and leave them for two days.
A disposable lancet is used to make two separate cuts into the forearm usually 5-10cm apart in quick succession. A stopwatch is started immediately and every 30 seconds filter paper is used to draw off the blood. The time from when the incision is made until all bleeding has stopped is called the bleeding time. The filter paper should not touch the edge of the clot as this may disturb the formation of the platelet plug. The test is finished when bleeding has stopped completely.
Experimental Data: The original weight of the mixture before separation was 4.6g. After separation the weights were as follows Grams Percent of mixture Iron Filings 1.4g 33% Sand 1.2g 28% Table Salt 0.8g 18% Benzoic acid 0.9g 21% TOTAL 4.3g 100% IV. Observations: The easiest part of this experiment was separating out the iron filings. With the magnet they separated out pretty easily. When almost boiling the sand, salt, and benzoic acid it didn’t seem like it was working.
How long were you able to still distinguish the drop of food coloring as separate from the water (i.e, not completely mixed) in each glass? a. Warm water: For 2 minutes and 50 seconds b. Cold water: For 4 minutes Osmosis (this activity requires a time-span of 3 days): Read and follow carefully the instructions on pg 49, "Alternative Procedure" (middle of left-hand column). Make sure the egg is submersed in each
Then divide that time by 12 and multiply by 60. After the resting heart rate is completed, exercise by using a stepping stool or low chair. While exercising, determine how long to exercise to increase the heart rate by 1.7 X the resting rate and rest 5 minutes between exercise bouts. After completing the exercise, attach electrodes tot the recording ECG as soon as possible after exercise and record for 4 minutes. Determine BPM for first 30 seconds in minute 1 of recovery, first 30 second.
Every few minutes, the lid of the crucible was lifted carefully with a tong to see if the magnesium had started to burn and also to left some air enter the crucible to make the experiment more efficient. 6. When the magnesium had completely reacted, the crucible was heated strongly without the lid on for few minutes. Then, the crucible was placed on gauze for it to cool down. 7.
PSYCHOLOGY Outline and evaluate research into the duration, capacity and encoding of information in the short term memory (12 marks) Duration of STM means how long a memory can last before it is no longer available (Peterson & Peterson 1959): The Aim was to see how long STM lasts when rehearsal is prevented. Ppts were briefly showed 3 letters (trigram) then were asked to count backwards to stop them rehearsing the letters. After 3, 6, 9, 12, 15 and 18 seconds, they were asked to recall the original 3 letters in order. They found out that 80% of trigrams 3 letters. By 18s, less than 10% of trigrams could be recalled.