In July 2012, 143 Boeing 717-200s were being used. The airlines using it were Southwest Airlines (88), Hawaiian Airlines (18), Cobham Aviation Services Australia (13), Blue1 (9), Volotea (9), and Turkmenistan Airlines (6). Delta Air Lines will get 88 717s from Southwest Airlines in 2013.
As of March 2009, the Boeing 717 has had five accidents. Nobody has died in these, and there have been no hull-loss accidents. A hull-loss accident is an accident where the plane is damaged so much that it cannot be repaired, or if the plane is completely destroyed.
Sources: Boeing 717 Characteristics 717 Airport planning report Boeing 717 Specifications
Jerry Trainor
Gerald William "Jerry" Trainor (born January 21, 1977) is an American actor, comedian and voice actor. He has appeared in series like T.U.F.F Puppy. He is best known as Spencer Shay in "iCarly".
Kroger
Kroger is a retail supermarket chain in the United States. As of 2010, it had 3,619 stores. Bernard Kroger opened the first Kroger store in 1883 in Cincinnati, Ohio. The company's headquarters are still in Cincinnati today. In 1999, the company merged with Fred Meyer, Inc.
Fort Lauderdale – Hollywood International Airport
Fort Lauderdale – Hollywood International Airport is an international commercial airport in unincorporated Broward County, Florida, It is southwest of Fort Lauderdale. It is also located near the city of Hollywood. The airport is north of Miami.
In 2010, the airport had 22,412,627 passengers This included 3,447,393 international passengers. From June 2010 through May 2011, the top five users off the airport were Southwest Airlines, Spirit Airlines, JetBlue Airways, Delta Air Lines and US Airways. At that time, FLL was the 22nd busiest airport in the United States. It was the nation's 15th busiest international airport. It was one of the 50 busiest airports in the world.
The following airlines serve Fort Lauderdale – Hollywood International Airport:
Dance of Death (album)
Dance of Death is an album by Iron Maiden. It is their thirteenth album and went on sale on 8 September 2003. It was produced by Kevin Shirley and Steve Harris.
The album was well-received; one person who reviewed it said it was a "triumphant return to form for these heavy metal legends.
The picture on the front of the album has many mistakes in it. Some people appear to have broken bones. Others look like they are standing on top of people or animals.
Iodine monochloride
Iodine monochloride, also known as iodine(I) chloride, is a chemical compound. Its chemical formula is ICl. It has iodine and chloride ions. The iodine is in its +1 oxidation state.
Iodine monochloride is a red or brown solid. It easily melts. It has two forms; one melts at 27.2°C and the other melts at 13.9°C. It is an oxidizing agent. It can vaporize easily, too to make a brown vapor. It reacts with water. It is the main source of I. It is an interhalogen.
It is made by mixing equal moles of iodine and chlorine. More chlorine would make iodine trichloride.
It is used to add iodine atoms to some organic compounds.
Fish Hooks
Fish Hooks is a 2010 animated series. It was created by Noah Z. Jones. The series was first broadcast on September 24, 2010. The show ended on April 4, 2014.
Milo Fishtooth, Oscar Fishtooth, and Bea Goldfishberg go to a high school called Freshwater High, and go on adventures.
Barred owl
The barred owl is a large owl commonly found in eastern North America.
The barred owl grow 43 to 61 centimeters (17 to 21 in) with a wingspan of 102 to 127 centimeters (40 to 50 in) at full length. The average male weigh 630 grams (22 oz) and female weigh 800 grams (28 oz). It has a round head with dark brown eyes while most owls in the eastern United States have yellow eyes. The barred owl lives about 10 to 12 years in the wild.
The barred owl lives in the woods across the eastern United States, southern Canada and Alaska. They sometimes migrate to Central America in the winter. The great horned owl is the only predator of the barred owl.
The barred owl makes nests on tree limbs and are usually near ponds or lakes. They may use nests that have been left by other animals. They can lay 1 to 5 eggs. Eggs hatch in 28 days and the young begin to fly 42 days later.
The barred owl eats rabbits, squirrels, bats, snakes, and small insects. They are able to find food from a far distance from its great hearing sense. They can also hunt fish.
Electrical impedance
Electrical impedance is the amount of opposition that a circuit presents to current or voltage change.
The two main ways to write an impedance are:
The Impedance and the resistance are quite similar:
In the case of resistance, a resistor resists any current going through it. The higher the resistance, the higher the voltage that is needed to achieve a given current. The formula is:
formula_5, where V is the voltage, R is the resistance, and I is the current.
In the case of impedance, an inductor resists changes to the current and the capacitor resists changes to the voltage.
The key difference between resistance and impedance is the word "change", the rate of change affects the impedance. Usually the "change" is expressed as a frequency, the number of times per second the current or voltage change direction. The formulas are:
For the inductor:
formula_6
For the capacitor:
formula_7
Where Z is the symbol for impedance, j is the imaginary number formula_8, formula_9 is the constant pi, f is the frequency, L is the inductance and C is the capacitance. The units for the resistance and the impedance are the same, the ohm with the symbol formula_10 (capital omega).
As indicated by the formulas above, the impedance varies depending on the frequency, for example, at zero Hertz, or DC, the impedance of the inductor is zero, the same as a short-circuit, and the impedance of the capacitor is infinite, the same as an open-circuit. Most signals are the sum of many sine waves at various frequencies (see the fourier transform for more details), and each of them experience a different impedance.
Similarly to the resistance, the higher the impedance, the higher the voltage that is needed to achieve a given current. The formula is:
formula_11, where V is the voltage, Z is the impedance, and I is the current.
At the physical level, simplifying many things:
One important difference between the resistance and the impedance is that a resistor dissipates energy, it gets hot, but an inductor and a capacitor store the energy and can return that energy to the source when it goes down.
If the impedance of the source, cable and load are not all equal, then a fraction of the signal is reflected back to the source, wasting power and creating interference. The ratio of the can be calculated with:
Any medium that can have a wave has a wave impedance, even empty space (light is an electro-magnetic wave and it can travel in space) has an impedance of about .
Across a resistor, both the voltage and the current goes up and down at the same time, they are said to be in phase, but with an impedance it's different, the voltage is shifted by 1/4 wavelength behind the current in a capacitor, and forward in an inductor.
A 1/4 wavelength is usually represented with the imaginary number "j", which is also equivalent to a 90 degree shift.
The use of the imaginary number "j" makes the mathematics much simpler, it allows to calculate the total impedance the same way as it's done with resistors, for example a resistor plus an impedance in series is R+Z, and in parallel it's (R*Z)/(R+Z).
List of World Heritage Sites in the United States
The List of World Heritage Sites in the United States is a group of places chosen by UNESCO, the United Nations Educational, Scientific and Cultural Organization.
UNESCO was created for the "conservation and protection of the world’s inheritance of books, works of art and monuments of history and science". The constitution of UNESCO was ratified in 1946 by 26 countries, including the United States.