Problem:H-alpha (H) is a specific deep-red visible spectral line in the Balmer series with a wavelength of 656.28 nm in air; it occurs when a hydrogen electron falls from its third to second lowest energy level. H-alpha light is important to astronomers as it is emitted by many emission nebulae and can be used to observe features in the Sun's atmosphere, including solar prominences and the chromosphere.

Based on this passage, when is h alpha line in the emission spectrum of hydrogen atom obtained?
Solution:OK... The relevant sentence in the passage is: H-alpha (H) is a specific deep-red visible spectral line in the Balmer series with a wavelength of 656.28 nm in air; it occurs when a hydrogen electron falls from its third to second lowest energy level.
when a hydrogen electron falls from its third to second lowest energy level.

Student A:The Continental Army consisted of soldiers from all 13 colonies and, after 1776, from all 13 states. When the American Revolutionary War began at the Battles of Lexington and Concord on April 19, 1775, the colonial revolutionaries did not have an army. Previously, each colony had relied upon the militia, made up of part-time citizen-soldiers, for local defense, or the raising of temporary "provincial regiments" during specific crises such as the French and Indian War of 1754 -- 63. As tensions with Great Britain increased in the years leading to the war, colonists began to reform their militias in preparation for the perceived potential conflict. Training of militiamen increased after the passage of the Intolerable Acts in 1774. Colonists such as Richard Henry Lee proposed forming a national militia force, but the First Continental Congress rejected the idea.

Answer this question based on the passage: who made up the members of the continental army?
Student B:OK... The important part for answering this question is: The Continental Army consisted of soldiers from all 13 colonies and, after 1776, from all 13 states.
soldiers from all 13 colonies and , after 1776 , from all 13 states.

Problem:"Do They Know It's Christmas?" is a song written in 1984 by Bob Geldof and Midge Ure in reaction to television reports of the 1983 -- 1985 famine in Ethiopia. It was first recorded in a single day on 25 November 1984 by Band Aid, a supergroup put together by Geldof and Ure and consisting mainly of the biggest British and Irish musical acts at the time. The single was released in the United Kingdom on 3 December 1984 and aided by considerable publicity it entered the UK Singles Chart at number one and stayed there for five weeks, becoming the Christmas number one of 1984. The record became the fastest selling single in UK chart history, selling a million copies in the first week alone and passing 3 million on the last day of 1984, on the way to displacing Wings's "Mull of Kintyre" as the biggest-selling single of all time in the UK. It held this title until 1997 when it was overtaken by Elton John's "Candle in the Wind 1997", released in tribute to Diana, Princess of Wales following her death. The original version of "Do They Know It's Christmas?" has sold 3.8 million copies in the UK to date.

Answer this question based on the passage: who wrote do they know it's christmas with bob geldof?
Solution:OK... The relevant information is: "Do They Know It's Christmas?" is a song written in 1984 by Bob Geldof and Midge Ure in reaction to television reports of the 1983 -- 1985 famine in Ethiopia.
Midge Ure.

Student A:Context: The South Downs Way is a long distance footpath and bridleway running along the South Downs in southern England. It is one of 15 National Trails in England and Wales. The trail runs for 160 km (100 mi) from Winchester in Hampshire to Eastbourne in East Sussex, with about 4,150 m (13,620 ft) of ascent and descent.

Question: where does the south downs way start and finish?
Student B:OK... The relevant sentence in the passage is: The trail runs for 160 km (100 mi) from Winchester in Hampshire to Eastbourne in East Sussex, with about 4,150 m (13,620 ft) of ascent and descent.
from Winchester in Hampshire to Eastbourne in East Sussex.

Problem:The Louisiana Purchase (French: Vente de la Louisiane "Sale of Louisiana") was the acquisition of the Louisiana territory (828,000 square miles or 2.14 million km2) by the United States from France in 1803. The U.S. paid fifty million francs ($11,250,000) and a cancellation of debts worth eighteen million francs ($3,750,000) for a total of sixty-eight million francs ($15 million, equivalent to $300 million in 2016). The Louisiana territory included land from fifteen present U.S. states and two Canadian provinces. The territory contained land that forms Arkansas, Missouri, Iowa, Oklahoma, Kansas, and Nebraska; the portion of Minnesota west of the Mississippi River; a large portion of North Dakota; a large portion of South Dakota; the northeastern section of New Mexico; the northern portion of Texas; the area of Montana, Wyoming, and Colorado east of the Continental Divide; Louisiana west of the Mississippi River (plus New Orleans); and small portions of land within the present Canadian provinces of Alberta and Saskatchewan. Its non-native population was around 60,000 inhabitants, of whom half were African slaves.

Answer this question: who did america get the louisiana purchase from?
Solution:OK... To answer the above question, the relevant sentence is: The Louisiana Purchase (French: Vente de la Louisiane "Sale of Louisiana") was the acquisition of the Louisiana territory (828,000 square miles or 2.14 million km2) by the United States from France in 1803.
France.

Problem:Context: The third season finale has Georgina return from Belarus wearing a blond wig and large coat, desperately seeking the help of various Upper-East Siders with her "problem." However, they all dismiss Georgina, as Blair is too worried about Chuck to listen to her, and Dan and Serena do not notice her new disguise while at the hospital. In the season finale, Georgina arrives at the loft with "something" of Dan's. It is revealed that Georgina is pregnant with what she says is Dan's child.

Question: when does georgina tell dan she is pregnant?
Solution:
OK... The relevant sentence in the passage is: It is revealed that Georgina is pregnant with what she says is Dan's child.
third season finale.