A sound wave will travel faster in a less dense material than a more dense material. Thus, a sound wave will travel nearly three times faster in Helium than it will in air. This is mostly due to the lower mass of Helium particles as compared to air
The Eadie-Hofstee kinetics graphs shows the value for Km at 37°C is higher than at 65°C, which supports calculations of Km and Vmax found from graphpad. Lineweaver- Burk can be used to find Km and Vmax however it’s inaccurate and outdated . Eadie hofstee is more accurate than the Michaelis-Menten as it has a linear relationship, thus it is prefered. From the values of Km and Vmax it can be concluded that trypsin is more efficient at 37°C. When the temperature is increased Km is larger therefore the affinity also increases but Vmax decreases so rate of product formation is lowered .However the data gathered is unreliable as the test was not
Category 2 contains winds of 96-110 miles per hour which could be compared to as faster than a baseball pitchers fastball. Category 2 hurricanes usually have moderate damage at landfall. Category 3 consists of wind speeds of 111-129 miles per hour, which could be compared to the serving speed of a professional tennis player. When a Category 3 hurricane occurs usually the damage is pretty extensive. The 4th Category contains winds of 130-156 miles per hour, which is faster than the world’s fastest rollercoaster.
Aim & Hypothesis: The aim of the experiment was to create a fair test that investigated the modifications of the thickness of a string instrument and its effect on the frequency of the string instrument. It was hypothesised that 'if ' the rubber band was thicker , it would generate a low pitched sound, and if the rubber band was thinner it would produce a higher pitched sound. This is due to the thicker rubber band vibrating slower, therefore having a lower frequency then producing a lower pitch. While the thinner rubber band would vibrate faster, producing a higher amount of sound waves, in turn raising the frequency or
Cancer is diagnosed each year in about 175,000 children ages 14 and under worldwide. Cancer is the leading cause of death by disease past infancy for U.S. children. However, thanks to better therapies, more than 80% of U.S. childhood cancer patients now become long-term survivors. Survival rates can vary depending on the type of cancer. About 420,000 childhood cancer survivors live in the U.S., with much more around the world (St. Jude Children 's Research Hospital) this shows that cancer is one major diagnosed disease found in children under the age of 15.
Left atrial enlargement with associated AF provides an easily identifiable indicator of LVDD and need for further echocardiography evaluation. 1- Trans mitral flow velocity: the early diastolic peak filling velocity when the transmitral pressure gradient is greatest generates the E wave velocity on the echocardiography. The late diastolic peak filling velocity associated with atrial contractions generates the A wave velocity. Because normal atrial contribution to total to total diastolic filling is only 30%, a normal A wave is smaller than E wave with a ratio >1. LVDD initially produces smaller E wave and a high with reversal of the E:A ratio.
Before they were able to discover such vaccine to cure whooping cough, well over 250,000 cases of whooping cough per year in the U.S., with 9,000 reported deaths (Medicine Net, 1996-2015). Whooping cough is a bacterial in the upper respiratory infection that leads to violent coughing. The word whoop is originated from the inflammation and swelling of the voice box structures that vibrates when there is a rapid inflow of air during inspiration. This disease is highly infectious ( (Medicine Net, 1996-2015). Pertussis is detected in the back of the neck.
An electronic healthcare record, EHR, is a computerized repository for a patient 's health information providing information to members of the health care team regarding a clinical encounter. Many systems can also provide decision support, quality assurance information and outcome data. EHR’s are used in modern medical practices. As of 2014, 83% of office-based physicians and 97% of hospitals have adopted EHRs; there is a large gap when it comes to the dental industry. The evolution of EHR’s in the dental practices started when 2004’s president, George Bush, called for the majority of americans to have an EHR within ten years.
INTRODUCTION N oise is acoustically made up of numerous sound waves with anarchically distributed amplitude and phase ratios, causing an unpleasant sensation1. Noise can be continuous - when there is no variation in terms of sound pressure nor sound spectrum; floating - when it presents variations in terms of acoustic energy in function of time; or impact noise - with acoustic energy peaks lasting for less than a second, at intervals greater than one second2. Impact noises are usually produced by quick gas expansion, such as that produced by firearms or bomb explosions. These types of sound can reach intensities of 140 dB SPL (sound pressure level) in frequencies around 2 and 3 kHz and, for this reason; they are harmful for human hearing3. When the human
Smoking-related deaths account for nearly one out of every five deaths in the United States every year, more than 1,200 deaths each day. It has been estimated that a person’s life expectancy is shortened by fourteen minutes every time she or he smokes a cigarette (Levinthal). Exposure of secondhand smoke is reported to cause 50,000 deaths in related to tobacco use https://www.cdc.gov/tobacco. Exposure to secondhand smoke has similar effects on the brain of both smokers and nonsmokers. In 1993, the U.S. Environmental Protection Agency (EPA) announced its conclusion from available research that environmental tobacco smoke (ETS), the side-stream smoke in the air that is inhaled by nonsmokers as a result of tobacco smoking, causes lung cancer (Levinthal).
Cooled air is unable to retain much moisture and saturates the air, therefore it increases the relative humidity. If the temperature decreases, the relative humidity will increase as a result in this situation. 3. In what ways are severe thunderstorms different from ordinary cell thunderstorms? What are some of the meteorological or atmospheric conditions that favor the development of
Veteran Crisis Line. The Veteran Crisis Line is a hotline created for veterans and their friends and family members as an initiative in the prevention of suicides among the veteran population. The Veterans Crisis Line is staffed by suicide and crisis prevention counselors who take calls from veterans, friends of veterans, and concerned family members. This crisis line is staffed 24 hours a day, 365 days a year. Since its inception in 2007, the Veterans Crisis Line has taken more than 650,000 calls and claims to have saved more than 23,000 lives (McCarl, 2013).
There are 21 million illicit drug users in America, and every year 1,700 adolescents die because of alcohol-related incidents. Last year, 4 million young Americans ages 12 and older received treatment for alcohol or illicit drugs. Millions more didn’t seek help. Forty-one percent of 12th graders report alcohol consumption in the previous 30 days. The types of prescription medications most commonly abused by people are painkillers (such as Vicodin and OxyContin),
The United States is facing an epidemic. As many are aware, prescription opioid abuse is a problem across the country. Within the last ten years, the United States has seen an alarming increase of opioid overdoses. Prescription painkillers claim the lives of 120 people every day, and approximately 6,700 people visit the emergency room for opioid abuse. In the current state, prescription drug overdoses claim more lives than car accidents.