.... m1=m2T12/T22 was discovered. Objective: After completing the experiment, we will be able to find the mass of objects using an inertial balance and compare them to accepted measures. Materials: C-clamps, inertial scale, a watch with a second hand, and a triple beam balance. Procedure: 1) The class will measure the period of oscillation of their balance pans when they are empty. The accepted period will be the average of the class. To find the period, you will measure the amount of time it takes for your balance to complete 20 oscillations. The period (T) will be computed by taking your time and dividing it by 20. This will be recorded as T2 .....

.... must continuously move in order to obtain enough oxygen to survey. The large teeth of a shark are evolutionarily derived from jagged skin scales. Which are apparent on shark’s ancestor’s Placodermi class. The digestion system of a shark contains a “spiral valve” intestinal system, which increases the surface area and lengthens the time food is digested in the unusually short intestine system of a shark. Sharks sexually reproduce. Unlike a shark, rays have flattened bodies so they can hide themselves in the sand at the bottom of any shallow water area and wait for a meal. Rays also have a whiplike tail for defense and jaws, .....

.... reefs are located close to shore, separated from land by only shallow water. Barrier reefs lie farther offshore, separated from land by lagoons more than ten meters deep. Atolls, on the other hand, are formed far offshore and they make a ring-shaped reef that close a circular lagoon. Coral reefs are the largest biological structures on the planet, with the largest being the Great Barrier Reef covering over 2000 kilometers along the East Coast of Australia. The reef is said to be 500,000 to 2,500,000 years old and is said to be visible from the moon. There is only one problem with this beautiful structure and that is the carelessness of man. Silt fro .....

.... to know." One day, a promising physics student walks into a professor's office wanting to find out what physics could teach him. This student, only having a rudimentary knowledge of physics, asks, "Can you give me a definition of physics?" The sage rolls his eyes back, and rubs his temples. He replies, "Big or small?" The student baffled by this, prompts again, "Um, physics?" The teacher noticing the ignorance in the room explains, "Physics is split into two major fields: Relativity (Einstein) and Quantum. Thus, they explain big forces in nature and small forces in nature, respectively. They are not cross- applicable." The student, still ba .....

.... personal computers (over 33% in the U.S.) and the exponential growth of applications of the Internet, most notably the World Wide Web (WWW). With increased penetration of computers, particularly multi-media computers equipped with CD-ROM drives and modems, subscription-based services such as America Online (AOL), Prodigy, and Compuserve, where consumers are able to check airline flight schedules and make reservations, purchase a wide variety of products, and discuss product performance with other consumers, are becoming very popular. Households in Chicago and San Francisco can purchase groceries from home using computer software marketed by Pe .....

.... the second stage of expansion. Part of the steam is extracted between the second and third stages at P2 and fed into an open feedwater heater operating at that pressure. Saturated liquid at P2 leaves the open feedwater heater. The efficiencies of all pumps are 80%, and the efficiencies of all turbines are 85%. Throughout this report the states will be referenced as depicted above with the numbers 1-13. The analysis of the system will involve the use of the Energy Rate Balance to isolate the specific enthalpies and associated values of temperature, pressure, specific volume, and steam quality. The Entropy balance equation will be used to calculate t .....

.... industry. However, climatic changes has had large and impacting effects on the construction industry. Compared to eastern Canada, the southern boreal forest region of western Canada has a relatively dry climate. Thus, drought effects are one of the major concerns being addressed by researchers in this region. climate modellers have predicted a large increase in temperature for this region, which could lead to even drier conditions and enormous stresses on vegetation in the western Canadian boreal forest. This type of impact was observed following the 1988 drought it experiences, when there was a die-back of aspen over extensive areas of the asp .....

.... the mission for proof of other living beings in the universe. But in a universe so incomprehensibly large that we no not even a boundary, I sincerely doubt that the human race is the only form of life. It seems certain scientists have come up with other hypotheses concerning UFO's. While all astronomers yearn for a concrete explanation on UFO's, their beliefs on their origin contrast. Many looking for a more scientific definition disregard UFO's as nothing more than a mere misinterpretation of a plane, weather balloon, or meteor. Some have gone so far as to say that specific witnesses to UFO's have seen nothing more than a hallucination and "wa .....

.... internal combustion engines in most cars. Once released into the atmosphere, they are converted into such pollutants as nitric acid and sulfuric acid, both dissolving easily in water. This results in acidic water droplets that can be carried by prevailing winds, returning to Earth as acid rain, snow, or fog. This effects the lakes by changing the pH balance. As the water pH approaches 6, crustaceans, insects, and plankton begin to disappear. When the pH is slightly above 5, major changes start to happen, less desirable species of mosses and plankton may begin to flourish, whereas others will lessen in numbers and die off. Below pH of 5, the water .....

.... makers and MNCUs should set a high priority on. This is because growth and development is strongly correlated with environmental degradation. Furthermore, it is fair to say that the MNCUs are more likely to have a more harmful environmental impact from growth and development, as opposed to the local corporations. This is because MNCUs may not be as knowledgeable as local corporations in resource utilization and land management. This also refers to the notion of Rthe locals know their land better than anybody elseS. The tropical rain forest of Brazil is a good example of this. The RindigenousS or the local people have a good understanding of how .....