Article: Mastic asphalt is a type of asphalt which differs from dense graded asphalt (asphalt concrete) in that it has a higher asphalt/bitumen (binder) content, usually around 710% of the whole aggregate mix, as opposed to rolled asphalt concrete, which has only around 5% added asphalt/bitumen. This thermoplastic substance is widely used in the building industry for waterproofing flat roofs and tanking underground. Mastic asphalt is heated to a temperature of 210 C (410 F) and is spread in layers to form an impervious barrier about 20 millimeters (0.79 inches) thick.

Question: What is the usual thickness of the mastic spread on roofs?
Ans: 20 millimeters

Article: The simplest model capacitor consists of two thin parallel conductive plates separated by a dielectric with permittivity . This model may also be used to make qualitative predictions for other device geometries. The plates are considered to extend uniformly over an area A and a charge density = Q/A exists on their surface. Assuming that the length and width of the plates are much greater than their separation d, the electric field near the centre of the device will be uniform with the magnitude E = /. The voltage is defined as the line integral of the electric field between the plates

Question: What equation describes the charge density for an ideal model of a capacitor?
Ans: = Q/A

Article: In 1978, Hayek came into conflict with the Liberal Party leader, David Steel, who claimed that liberty was possible only with "social justice and an equitable distribution of wealth and power, which in turn require a degree of active government intervention" and that the Conservative Party were more concerned with the connection between liberty and private enterprise than between liberty and democracy. Hayek claimed that a limited democracy might be better than other forms of limited government at protecting liberty but that an unlimited democracy was worse than other forms of unlimited government because "its government loses the power even to do what it thinks right if any group on which its majority depends thinks otherwise".

Question: Hayek believed that which type of democracy was the worst of its alternatives?
Ans: unlimited

Article: In 1355 in Buda King Casimir III the Great issued the first country-wide privilege for the nobility, in exchange for their agreement that in the lack of Casimir's male heirs, the throne would pass to his nephew, Louis I of Hungary. He decreed that the nobility would no longer be subject to 'extraordinary' taxes, or use their own funds for military expeditions abroad. He also promised that during travels of the royal court, the king and the court would pay for all expenses, instead of using facilities of local nobility.

Question: When did buda king casimir issue the heir to his nephew?
Ans:
1355