6A100 - To double the resonant frequency of a resonant circuit:

How many countries border San Marino?

With how many countries does the US share a land border?

How many faces has the clock on Big Ben's tower?

How many hours behind Greenwich Mean Time is California?

How many fountains are found in the gardens at the Palace of Versailles? 

How many candles were used to light the Hall of Mirrors in the Palace of Versailles?    

On a clear day how far can one see from the observation platform of the Empire State Building?

Peter Minuit of the Dutch West India Company bought Manhattan island from the local indians in 1626 with cloth, trinkets and beads worth the equivalent  of what?

In which European city is Schiphol airport?

Where is Dam Square?

In which city can one visit the Palace of the Popes?

In which county can one find Luton Airport?

With 196 tonnes, the heaviest what ever built is found within the walls of the Kremlin?

Since 1981, Mumbai is the official name for which Indian city?

The name of which capital city is the Latin word for a red dye wood?

Where in London can one view the Magna Carta and the Rosetta Stone?

With 40 tonnes, the largest what ever built is found within the walls of the Kremlin?

Where is the Astronaut Hall of Fame located?

In which city can one board the luxurious 'Blue Train'?

In which city does the National Assembly of Wales sit?

Which London street does one associate with the 1960s fashion scene?

In which city is the world famous Sears Tower skyscraper located?

How many litres of beer are consumed each year at the Oktoberfest in Munich?

Which metal was used to construct the outside hull of the Statue of Liberty?

In which city is the world famous Burg Al Arab skyscraper located?

Which language is Afrikaans derived from?

The Royal Mile is a famous street in which capital city?

Which European capital has the nickname 'The Athens of the north'?

The Uffizien museum, a feast for the eyes for lovers of Renaissance paintings, is located in which city?

Whose upper house of Parliament is called the Bundesrat?

What is the name of the film prize awarded each year at the Venice film festival?

In which country is the harbour city Mumbai?

In which city is the world famous skyscraper Petronas Towers located?

It is said that the residents of which European capital never sleep?

In which city is the famous Prado museum?

Which destination for 60s hippies has been called the Paris of the Sahara?  

The German city of Lübeck is world famous for which product?

GUM is the world famous dept store in which city?

Which famous castle was the inspiration for the Disney theme park castle?

In which city is the world famous Chrysler Building skyscraper located?

In which city is the world famous Woolworth Building skyscraper located?

In which country can one find the Giant's Causeway?

The famous 'Lake Palace' in India, once a summer residence for royalty and now a luxury hotel, was the setting  for which action film? 

In which capital city is the Roland Garos stadium?

The victory goddess Victoria and her chariot on the top of the Brandenburger Gate in Berlin spent the years between 1806 and 1814 in which capital city?

The Emperors Palace or Forbidden City is located in which city?

The Cathedral of our Lady in Antwerp contains four masterpieces depicting Biblical scenes by which famous Baroque painter?

The 'Liberty Bell' is found in which US city?

In which harbour city is Lord Nelson's flagship HMS Victory?