Honors Physical Science Lab Report

Students in an AP Physics lab perform an electrostatics experiment involving two charged spheres suspended

While antacids are used largely by the general public, there are no studies showing that they help or are effective in treating GERD. They are simply mechanisms to treat symptoms of a larger problem. PPI are the most effective for the treatment of GERD. The medication is orally administered as an inactive counter-part. It is converted to the active form by parietal cells in the stomach. Once active the drug causes irreversible deactivation of the enzyme that generates gastric acid. Because the deactivation is irreversible, the decrease is acid is effective until more enzyme can be produced. The goal for PPIs is to reduce stomack acid and to prevent stomach ulcer and further exacerbation of esophagitis. The medication may cause headache, diarrhea, nausea, and vomiting thought the incidence of occurrence is very low. PPIs do increase the likely hood of the development of pneumonia due to the altered GI flora. Another major adverse effect is the rebound hypersecretion of acid. Patients who discontinue taking PPIs may experience dyspepsia due to acid rebound. This can be minimized by using the lowest dose and tapering the medication. Histamine receptor antagonists, though indicated for the treatment of GERD are not as effective at decrease stomach acid. PPI can decrease acid content by 90% whereas H2RAs only decrease by 65%. The medication works by blocking H2 receptors on parietal cells in the

11. Acids are any substance that yields hydrogen ions when put in aqueous solution. In other words, the concentration of hydrogen ions goes up the the further doe the pH scale you go. Bases are any substance that accepts hydrogen ions in aqueous solution. Again, the more basic it is the lower the concentration of hydrogen ions.

3. Read and record the amount of water in the cylinder. Don 't forget to look at the bottom of the meniscus for your recording.

I spent most of this week working on end-of-semester projects, reanalyzing my current set of data, and preparing for another round of kinetic experiments.

Gastro-esophageal reflux disease (GERD) is a medical condition where abnormal distal esophageal acid exposure caused by reflux of acid contents results in troublesome symptoms1, 2. It is caused by the failure of endogenous anti-reflux barriers such as the lower esophageal sphincter1. Small amounts of reflux occur naturally throughout the day in everyone but normal anatomy and physiology of the esophagus, lower esophageal sphincter, diaphragm muscles at the hiatus and stomach prevent pathological GERD3. The worldwide prevalence of GERD is estimated to be 13-19%, with 35% suffering symptoms at least monthly, 12% at least weekly and 5% daily4 though different sources have

Introduction Free fall, which is accelerated motion that happens when an object falls with only the force of gravity acting on it (Hsu, Tom, Dr.). The speed of the tennis ball in y-direction will become 0m/s when the ball reaches to the peak and the acceleration will be 9.8m/s^2. Therefore, in order to find out the percent error for the time and eventually to predict the relationship between rolling speed and falling time, we can do this by using the equation: "y=vot+" 1/2 at^2, where y stands for the height of the table (0.865m), "vo" stands for the initial speed of the ball (0m/s), t stands for the time (from the app) and a stands for the acceleration (9.8 m/s2). The equation percent error=|theoretical-├ experimental┤|┤/theoretical is

Introduction Antacid is in a form of medicine to help prevent and or correct the acidity level in one’s body, focusing mainly in the stomach. The stomach contains a solution of hydrochloric acid with a pH level of approximately 1.5 (“Stomach” par. 1). The use of hydrochloric acid is to help the process of digestion in the stomach however, if there is a high number of acid, and is intense and excessively concentrated, it can result in symptoms of heartburn and acid indigestion. Indigestion is a feeling of pain and discomfort in the stomach in having difficulties in digesting food. Heartburn is a form of indigestion felt as a burning sensation throughout the chest, caused by acid regurgitation into the esophagus (“Indigestion” par. 3).

Reoccurring acid reflux, which is the back flow of stomach acid or bile into the esophagus, can lead to GERD. Normally, when you swallow, the lower esophageal sphincter relaxes. When the lower esophageal sphincter relaxes, food and liquid flow down into the stomach, and the former closes again. However, if the valve relaxes abnormally or weakens, stomach acid will flow back up into the esophagus. This will lead to frequent heartburn, which can sometimes disrupt the patent’s daily life.

“Hey look, Krispy Kreme is giving out free donuts!”, gasped Rachel. It was a dark, chilly spring morning when the Roosevelt High School Science Club took some of its members to the Cranbrook Institute of Science for a workshop known as the Explorathon 2015. The purpose of this trip was to provide opportunities for females to experience some of the careers that specialize in the math and science field. As the bus rolls on, laughters and voices can be heard mainly from the back while people that sat near the front were either sleeping, doing homework, or simply browsing through their phone. Even though many had tired faces, everyone were all excited since this was a new experience for us. As the bus pulls up to the facility, we were all captivated

On lab 3 “What does ‘random’ motion look like? Describing diffusion and random motion”, we were able to see the random motion of various beads suspended in fluids of varying viscosity. We also identified how the motion of the beads differ based on bead size, bead mass, and the fluid viscosity. Furthermore, the impact of the parameters on the diffusion were studied. Based on their diffusion the random motion of the various beads was analyzed. Overall, even if there were many errors while doing the experiment we were able to know what random motion look like and it was possible to see the relationship between the parameters and the diffusion of the beads. To reduce the amount of errors occurring during doing the experiment

Participants watched two disks moving towards each other from opposite directions. When the two disks meet, a clicking sound is heard occasionally. Participants had to determine whether the two disks bounced off one another or they moved past one another. Sound hints that the disks collided with one another. Participants were asked to answer Physics questions related to motion, before being asked to rate his/her familiarity with sports that involve balls. Participants had to calculate the stream/bounce score which is the number of times the spheres collided with one another minus the number of times the collision did not occur. It was a correlational study and correlation coefficients were calculated before being squared to find

Discussion: When objects are placed under the microscope, it appears upside down and backwards. In part A, the letter E is placed right side up. But, when viewed through a microscope it looks as if it was placed upside down and backwards. In part B, the cotton strands with low power appears sharper when there is less light from the diaphragm. This is because with less light there is a sharper focus and when there is too much light coming from the diaphragm, the object can get blurry and out of focus.

Use mathematical intuition and algebraic reasoning to make reasonable predictions. Justify predictions with obtained data

The demonstrated in this experiment is when there is lightweight applied to a cart and there is more weight applied to the pulley then a cart will move faster because the net force is pulling down. When there is more weight applied to a cart, and less weight applied to the pulley, a cart will still move, but not fast like part A. There is a relationship between force, mass and acceleration and those three are the demonstrated of this experiment.