In mathematics and physics, the centroid or geometric center of a plane figure is the arithmetic mean (``average'') position of all the points in the shape. The definition extends to any object in n-dimensional space: its centroid is the mean position of all the points in all of the coordinate directions. Informally, it is the point at which a cutout of the shape could be perfectly balanced on the tip of a pin.

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is centroid the same as center of gravity?

A: no


A few British upper-class families have ``triple-barrelled'' surnames (e.g. Anstruther-Gough-Calthorpe; Cave-Browne-Cave; Elliot-Murray-Kynynmound; Heathcote-Drummond-Willoughby; Smith-Dorrien-Smith; Vane-Tempest-Stewart). Not all of those with multiple names were of the nobility; landed gentry such as George Henry Lane-Fox Pitt-Rivers consolidated the estates and wealth of several families in their multiple names. These are sometimes created when one spouse has a double-barrelled name and the other has a single surname. Nowadays, such names are almost always abbreviated in everyday use to a single or double-barrelled version. There are even a few ``quadruple-barrelled'' surnames (e.g. Hepburn-Stuart-Forbes-Trefusis, Hovell-Thurlow-Cumming-Bruce, Montagu-Stuart-Wortley-Mackenzie, Plunkett-Ernle-Erle-Drax, Stirling-Home-Drummond-Moray, and the Danish Krag-Juel-Vind-Frijs family). The surname of the extinct family of the Dukes of Buckingham and Chandos was the quintuple-barrelled Temple-Nugent-Brydges-Chandos-Grenville.

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can you have two surnames in the uk?

A: yes


The first-generation iPad features an Apple A4 SoC, which comprises a 1 GHz processor, 256 MB of RAM and a PowerVR SGX535 GPU. There are four physical switches on the iPad, including a home button near the display that returns the user to the main menu, and three plastic physical switches on the sides: wake/sleep and volume up/down, plus a software-controlled switch whose function has changed with software updates. Originally the switch locked the screen to its current orientation, but iOS 4.2 changed it to a mute switch, moving the rotation lock function to an onscreen menu. In the iOS 4.3 update, a setting was added to allow the user to specify whether the side switch was used for rotation lock or mute. Unlike its successors, the first-generation iPad has no cameras.

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is there a camera on ipad 1st generation?

A: no


Lemonade Mouth is a 2011 American teen musical drama television film, based on the 2007 novel of the same name by Mark Peter Hughes. The film was directed by Patricia Riggen and written by April Blair, and stars Bridgit Mendler, Adam Hicks, Hayley Kiyoko, Naomi Scott and Blake Michael. The Disney Channel Original Movie tells the story of five high school students who meet in detention and form a band to stand up for their beliefs and to overcome their individual and collective struggles.

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is lemonade mouth based on a true story?

A:
no