The mass number (symbol: A) of an atom is the sum of the number of protons and the number of neutrons in the nucleus. The mass number is different for each isotope of a chemical element.
We write a mass number after an element's name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon has 6 protons and 6 neutrons. We write it as carbon-12 or C.
Mass number is not the same as:
The difference between the mass number and the atomic number gives the number of neutrons ("N") in a given nucleus: "N "= "A "− "Z".
The mass number is not shown on the periodic table. For each element, what is shown is the "standard atomic weight" and the "atomic number".
J. Caleb Boggs
James Caleb Boggs (May 15, 1909 – March 26, 1993) was a Republican U.S. Senator from Delaware from 1961 to 1973. He was Governor from 1953 to 1960 and a Congressman from 1947 to 1953. He was defeated in 1972 by future President of the United States, Joe Biden. He was born in Cheswold, Delaware.
Boggs died on March 26, 1993 in Wilmington, Delaware at the age of 83.
LazyTown
LazyTown is a television programme for children. The series is educational and teaches children to be healthy and exercise. The program was created by people from Iceland. The series has won multiple awards the American television.
The show has been very successful and has aired in many countries around the world.
The show features live-action actors and puppet characters set in a colorful town called LazyTown. At the start of the series, the town's citizens are very lazy, but the mayor's niece (Stephanie) arrives to change that. She is aided by an athletic superhero named Sportacus, who teaches the children of the town to eat healthy food and exercise each day. However, their fun is often stopped by the town's laziest man, Robbie Rotten, who spends large amounts of time attempting to make the children lazy again and trying to remove Sportacus and Stephanie from the town, usually by dressing up in disguises to fool the children. Robbie's plans often fail. The show's episodes often involve an educational or important message for viewers, and songs or dance numbers performed by the characters, usually Stephanie being the lead singer or dancer.
Blockland
Blockland is a multiplayer computer game made on the Torque Game Engine, where people make things using blocks. Blockland has around 35,500 players. People could build up to 128,000 bricks on every server to keep the game running best.
In 2009, Lego were talking to Eric "Badspot" Hartman about selling Blockland. It has been talked about by "The Screen Savers" and Shack News. In 2005, when "Blockland" was in beta, "Blockland" was on an article on "Globe and Mail" in which Eric says 20,000 people downloaded "Blockland" in the ten days since it "became big". Right now, the full game costs $20.
Tarzan II
Tarzan II is a direct-to-video midquel to the 1999 Disney animated movie "Tarzan", released on June 14, 2005. The movie tells the story of a young Tarzan's adventure to discover who he really is. It features two new songs from Phil Collins and takes place during the song "Son of Man" from the first movie. It is the last film in the chronology of Walt Disney's version of Tarzan.
Tactical victory
A tactical victory happens when the winning side in a battle loses fewer troops than the other side.
Terminal velocity
Terminal velocity is the speed when an object falling through a fluid (usually air) is no longer getting faster.
Terminal velocity happens at the moment in time that the force of gravity, called weight, is the same as the opposite force of air resistance or friction. In other words, terminal velocity is the point at which the velocity (speed of moving of the falling object) is no longer getting greater. The gravitational force minus the force of drag (or air resistance) equals zero.
An object continues to fall steadily until air resistance becomes so great that it equals the pull of gravity and the object can fall no faster. Besides weight, terminal velocity depends on other factors such as shape and cross sectional area.
The terminal velocity of a skydiver in a belly-to-earth (i.e., face down) position is about 195 km/h (122 mph or 54 m/s). This velocity is the limit of the acceleration process. The forces on the body balance each other more and more closely as the terminal velocity is approached. In this example, a speed of 50% of terminal velocity is reached after only about 3 seconds, while it takes 8 seconds to reach 90%, 15 seconds to reach 99% and so on.
Higher speeds are achieved if the skydiver pulls in his or her limbs (see also freeflying). In this case, the terminal velocity increases to about 320 km/h (200 mph or 90 m/s), which is almost the terminal velocity of the Peregrine Falcon diving down on its prey.
Babe (movie)
Babe is an Australian-American movie which was made in 1995. It was nominated for seven Academy Awards including the Academy Award for Best Picture in 1996. It won the Academy Award for Visual Effects. It tells the story of a pig who learns how to look after sheep and becomes Australia's champion sheep dog. The movie stars Magda Szubanski, James Cromwell, and Zoe Burton. Some of the voices used by the animal characters were by Christine Cavanaugh and Hugo Weaving.
"Babe" was made by Kennedy Miller Productions, the producer was George Miller and the director was Chris Noonan. Noonan and Miller also wrote the story. "Babe" was released by Universal Pictures. Babe was filmed at Robertson, New South Wales.
A second movie about Babe the sheep pig was made called "".
Swedish Empire
Swedish Empire was, between 1611 and 1718, one of the great powers of Europe. In modern historiography this period is known as the Swedish Empire, or "stormaktstiden" ("the era of great power").
Mountain View, California
Mountain View is a city in California in the San Francisco Bay Area. It is north of San Jose and south of San Francisco. It is the fourth largest city in Santa Clara County behind San Jose, Sunnyvale, and Santa Clara.
Mountain View is located south of the San Francisco Bay and west of the Santa Cruz Mountains.It is bordered by Palo Alto to the northwest, Los Altos to the south and southwest, and Sunnyvale to the east.
The major highways in Mountain View are California State Route 85, California State Route 82, California State Route 237, and U.S. Route 101. California State Route 85 terminates at U.S. 101 and California State Route 237 terminates at California State Route 82. California 82 is known as the El Camino Real and follows the historic route of U.S. 101 through the San Francisco Bay Area. From Mountain View, tourists can take U.S. 101 North to get to San Francisco, U.S. 101 South to get to San Jose and Los Angeles, California 85 South to get to Los Gatos and Gilroy, California 237 East to get to Milpitas, California 82 North to get to Los Altos and Palo Alto, and California 82 South to get to Sunnyvale, Santa Clara, and San Jose.
Companies in Mountain View include Google and Mozilla.
Estonians
Estonians () are a Finnic people closely related to the Finns and inhabiting, primarily, the country of Estonia. The Estonians speak a Finno-Ugric language, known as Estonian. Although Estonia is traditionally grouped as one of the Baltic countries, Estonians are linguistically and ethnically unrelated to the Baltic peoples of Latvia and Lithuania.
Menlo Park, California
Menlo Park is a city in California in the San Francisco Bay area. Menlo Park is on the peninsula between San Jose and San Francisco. To the south are Stanford and Palo Alto. To the north is Atherton.
Menlo Park has various school districts. It has the schools La Entrada, Hillview, Oak Knoll, and Las Lomitas.
Estonian Soviet Socialist Republic
The Estonian Soviet Socialist Republic, or Estonian SSR or ESSR, was a republic of the Soviet Union. It was administered by and subordinated to the Government of the Soviet Union.