Question: What scientific principle explains how a propeller works? Passage 1:Rafael Casanova i Comes () (Moià, 1660 – Sant Boi de Llobregat, 2 May 1743) was a Catalan jurist, and supporter of Charles VI, Holy Roman Emperor as a claimant to the Crown of Spain during the War of the Spanish succession. He became mayor of Barcelona and commander in chief of Catalonia during the Siege of Barcelona until he was wounded in combat while commanding La Coronela during the counterattack on the Saint Peter front on the last day of the siege, September 11, 1714. After the war he received a royal pardon for having supported the Habsburg claim to the Spanish throne. He recovered from his wounds, and continued his fight against absolute monarchy as a lawyer. It has been claimed that he is the author of the book Record de l'Aliança fet el Sereníssim Jordi Augusto Rey de la Gran Bretanya (Remembrance of the Alliance to George I of Great Britain) in which Catalonia reminds England of the Treaty of Genoa and their obligation to Catalonia.
 Passage 2:German Type IXC submarines were slightly larger than the original Type IXBs. U-131 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
 Passage 3:After the fourth single release "Willy Use a Billy... Boy", released in 1995 and peaked #5 in Austria, later in June 1996, both members left the band, due to a disagreement between Leigh and producer Brandes, who were quickly replaced by artists Jeane (Jeanette Macchi-Meier) and briefly Terence D'Arby (not to be confused with Terence Trent D'Arby), who himself again was replaced by Ché Jouaner. Thus it has been later revealed, that Brandes was the rapper on all E-Rotic releases, except on the first album, where he shared raps with Raz-Ma-Taz, such on "Take My Love", and Leigh still had to continue to provide vocal work for E-Rotic's four follow up studio albums The Power of Sex, Sexual Madness, the Abba cover album Thank You for the Music until 1999 to the Kiss Me studio album due to her contract. Also, raps on their first single "Max Don't Have Sex With Your Ex" were not done by Smith or Brandes, but instead were done by Marcus Thomas (aka Deon Blue) who would later join Pharao. Meanwhile, Leigh, alongside Raz-Ma-Taz, formed her own band S.E.X. Appeal in 1996. "He promised me a lot of things during my E-Rotic time, but never was willing to keep his promises. One of these promises was to produce a mixed video, with both cartoon and real people. We were never shown in the videos and so we had problems with our concerts, cause no-one really knew us as persons," Leigh revealed. On 27 June 1996, the group's second studio album The Power of Sex was released, preceded by the latter mentioned lead single "Willy Use a Billy... Boy" and followed by the singles "Help Me Dr. Dick", "Fritz Love My Tits" and "Gimme Good Sex", all becoming moderate chart hits, peaking at #18, #16 and #3 in Austria respectively. In 1996, E-Rotic were featured in the supergroup, called "Love Message", on the same titled, Masterboy-produced charity single "Love Message". They also appeared on the Queen tribute compilation album Queen Dance Traxx, with the song "Who Wants to Live Forever", which also saw a promotional release. The tribute album also featured another Queen song "We Are The Champions", recorded with all artists, who participated on Queen Dance Traxx as a supergroup labeled as "Acts United". In 1997, the studio albums "Sexual Madness" and the Abba cover CD Thank You for the Music was released with its single releases "Turn Me On", which peaked at #7 in Finland, "Thank You for the Music" and "The Winner Takes It All". The album Thank You for the Music was released under the artist name "Jenn and C." in France. Ironically the music video for "Gimme Good Sex" was also the first one, not being a comic video, but still it never aired and was banned from music channels because of being too controversial for its sexual content, thus Leigh, alongside Raz-Ma-Taz, left the band earlier, because she wanted to be shown in music videos.

Output: 2