Mechanisms of disease and diseases of skin, bone and muscles Essay

Mechanisms of disease and diseases of skin, bone and muscles - Essay Example Additionally, apparently the upper layers of the dermis or the complete epidermis might be damaged, as a result of the grease fire in the kitchen. The wound and swelling may appear red or pink in color with watery texture and is painful, as he complained. This wound may get blanched with application of pressure too. Fortunately, with second degree burns of partial thickness, it should be healed within 10-21 days without grafting and appearance of scar marks will be minimal. 2. Since Margie experienced swelling in your knee within just 5-10 minutes of the basketball accident, it generally means her ACL is injured it is necessary to get medical attention without delay, otherwise it may cause permanent damage to one’s knee. It is rarely seen that an injured ACL does not cause any swelling (McCance & Huether, 2014). Next in the list of torn ACL symptom is pain. Any person having ACL injury gets pain most of the time. It is very rare that an ACL injury patient does not get a pain and it has happened earlier. The pain can vary from mild to severe. The doctor should see if Margie’s knee get swollen and it will not be unusual if your knee possesses a small amount of fluid in it. Furthermore, if the doctor sees that Margie’s knee has swelled up like a basketball, there are high chances that Margie has got an ACL injury or a fracture. Margie heard a pop sound that is not as minor or low when one cracks one’s knuckles. This popping sou nd also does not refer to the ones that one generally feels with the motion of the knee. If Margie has heard a powerful, loud and painful pop sound, after she had an injury in her knee – this generally means she has got a torn ligament. Many athletes generally confess to their teammates that they heard a pop sound when their ACLs are torn. One cannot bear one’s own weight and experiences extreme pain while walking is the general complaint. There are many injuries that can cause serious pain in one’s leg

Conservation of momentum. (lab report) Lab Report

Conservation of momentum. ( ) - Lab Report Example Conclusion gave information concerning the realization of the intended purpose of the entire experiment as per the relayed hypothesis, which is in the introduction section. Introduction Information or data obtained after the commencement of this experiment will be essential in determining the extent and effect of conservation laws. This was via utilizing effects of collision prior to and afterwards and encompassed measuring respective quantities of kinetic energies of the involved bodies. The apparatus used for this purpose was Ballistic pendulum and a ball propelled horizontally on a flat surface to hit a stationery pendulum at a certain velocity. Data taking was before and after collision, which were essential in drawing intended comparisons regarding momentum conservation. This is by taking Kinetic energies of the colliding body with that which is stationary to help in drawing conclusion regarding their respective conditions or states both before and after collision has taken plac e. Theoretical hypothesis in this experiment encompassed preservation of a moving body’s total momentum except in the case of interruption by an external force. Therefore, kinetic energy data obtained prior to and after collision entailed to affirm conservation principles of linear momentum. Essential equations that were in use for this experiment include, 1. Initial velocity: Vi = d/t 2. Initial kinetic energy: KEi =1/2mvi2 3. Initial Momentum: Pi =mvi 4. Final velocity: Vf =v2gR (1-Cos?) 5. Final Kinetic Energy: KEf = ?(M+m) vf2 6. Final Momentum: Pf = (m + M)vf Procedures 1. Initial step encompassed taking measurements of, Mass of the ball Mass of pendulum Pendulum’s radius starting from its pivotal point towards the mass’ center 2. Then the positioning or setting up of the photogate followed but after removal of pendulum from apparatus that was in front of the propelling launcher. 3. There was opening of convenient data collection tool in a computer whose ro le encompassed recording results for easy evaluation, comparison and computations. 4. Then loading of plastic ball into the ballistic pendulum took place. 5. In this step, it entailed measuring distance starting from outer edge of one photogate eye to the second photogate eye then followed by recording the data, which was the first trial. 6. The practical part of the experiment commenced with firing of ball via the photogate assembly and then taking the amount of time it took to go through the photogate for each trial. In addition, there was also taking of distance measurements separating photogate eyes for each trial because it they were subject to change after each propelling trial of the ball. 7. After the sixth step, the obtained data of time in seconds and distances in meters were essential in calculating respective velocities for each trial coupled with tabulating the data in the results’ tables. There was also the need of computing overall mean velocity for the ten tri als as well as standard deviation for each propelling time of the ball. 8. The already obtained data (mean velocity) of the ten trials its purpose was to calculate initial kinetic energy and momentum with the aid of equations (2) and (3). 9. After the first experiment section, there was dissembling of photogate and mounting of pendulum in such a way it swung freely. This is by ensuring once