... to have a specific value for its resistance. As an extension of the Ohm's Law, two more relationship can be drawn for electric circuits containing resistors connected in series or/and parallel. For resistors connected in series, the sum of their resistance is, RTOTAL=R1+R2+ ..... +Rn . And for resistors connected in parallel, 1/RTOTAL==1/R1+1/R2+ ..... +1/Rn . Complex dc circuit involving a combination of parallel and series resistors can be analyzed to find the current and voltage at each point of the circuit using 2 basic rules formulated by Kirchhoff. 1) The algebraic sum of current at any branch point in a circuit is zero. 2) The algebraic sum of potential ...

... silver, and tin. These alloys are called amalgams. Its way of amalgamating with gold is made use of the recovery of gold from its ores. is a bad conductor of heat and a okay conductor of electricity. The most important salts are mercuric chloride HgC12 which is a corrosive and violent poison. Mercurous chloride Hg2Cl2 which used to be used in medicine. fulminate Hg(ONC)2 used as a detonator in explosives and mercuric sulfide HgS used as a high-grade paint pigment. Organic compounds are important and dangerous. Methyl is a lethal pollutant found in rivers and lakes. is a virulent poison and is readily absorbed through the respiratory tract, the gastr ...

... the rest. In the air, the sulphur dioxide and nitrogen oxides can be transformed into sulphuric acid and nitric acid, and air current can send them thousands of kilometres from the source.When the acids fall to the earth in any form it will have large impact on the growth or the preservation of certain wildlife. NO DEFENSE Areas in Ontario mainly southern regions that are near the Great Lakes, such substances as limestone or other known antacids can neutralize acids entering the body of water thereby protecting it. However, large areas of Ontario that are near the Pre-Cambrian Shield, with quartzite or granite based geology and little top soil, there is no ...

... of digital CD quality music that can be saved and also played on your personal computer. I personally like MP3 the best because I find them to sound better. To play these files you need a MP3 player. There are a couple different types of players out on the internet. The most common player for MP3s is a program called Winamp. Winamp can be found at Winamp.com. I personally like this player because it has a digital equalizer, which gives you more control over the sound of the music. This player reads the songs directly off the hard drive so there is no need for a disk, CD, or tape of any kind. This player also has a feature of a playlist where songs can b ...

... beverages is ethyl alcohol. Ethyl alcohol is a potentially addictive drug and a depressant of the central nervous system (Kestler 6). Alcohol acts as a sedative and as an anesthetic, reducing nerve transmissions and impulses to the central nervous system. This depresses mental, motor, and vital functions such as pulse rate, respiration, and blood pressure (Kestler 6). The body can absorb alcohol very quickly, approximately 20% goes directly into the blood stream from the stomach, the rest enters the body through the small intestine. Moments after alcohol enters the blood stream it reaches the Cerebral Cortex, the part of the brain responsible for judge ...

... 1947 while searching for the remains of a downed Marine C-46 transport, lost somewhere in the Mount Ranier area, a young Idahoan businessman named Kenneth Arnold spotted something that would change his life forever. Just north of his position flying at an altitude of 9,500 feet and an unprecedented airspeed of 1,700 mph he spotted nine circular aircraft flying in formation. According to his estimate the aircraft were approximately the size of a DC-4 airliner ( Jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighting gave birth to the phrase "flying Saucer" coined by a reporter named Bill Begrette ...

... the students. The task for the experimenter would be to make sure to have a control group, to have a wide variety and different types of participants, to make sure all participants use the same equipment, and have controlled amounts of caffeine. The tasks for the participants would be to carefully follow the instructions of the experimenter, that is to hit the baseball. 3) Will you treat all the participants in the same way? No, I would not treat all the participants in the same way. The control group would not be given caffeine. However, I would treat all experimental groups the same because that will give more accurate results. If the participants were ...

... (Stars) These spots seem to form different patterns on the walls and move along with the disco ball, but not always at the same rate. (Constellations) There are two very shy people in the room that sometimes leave the room. When they are in the room they stand by the walls and always wink for some reason, so all we can see of them is one of their eyes. (Mercury & Venus) Then there are three very weird people in the room that are always in the middle of the room doing the Waltz. They do this some how by themselves and they to are always winking. They are sometimes on the first floor and sometimes on the second floor. (Mars, Jupiter, and Saturn) There is also ...

... in helium conservation dates to the Helium Act of 1925 which authorized the Bureau of Mines to build and operate a large-scale helium extraction and purification plant. From 1929 until 1960 the federal government was the only domestic helium producer. In 1960, Congress amended the Helium Act to provide incentives to natural gas producers for stripping natural gas of its helium, for purchase of the separated helium by the government, and for its long-term storage. With over 960 million cubic meters (34.6 billion cubic feet) of helium in government storage and a large private helium recovery industry, questions arise as to the need for either the federal he ...

... One such case is that of Libyan dictator Muammar el-Qaddafi, who "was so fixated by the dream of owning atomic bombs that he allegedly offered to pay India the equivalent of its national debt- nearly $18 billion for the technology." But India refused to sell Qaddafi its technology. Some of the countries that are suspected of having biological warfare programs are unfriendly toward the U.S. Some of these countries are located in the Middle East and some are signatories to the Biological Weapons Convention. This 1972 Biological and Toxin Weapons Convention, prohibited its signatories from possessing or employing such weapons. This possess a significant threat to the U ...