QUES: There are many geological issues concerning the rivers and streams of the Appalachians. In spite of the existence of the Great Appalachian Valley, many of the main rivers are transverse to the mountain system axis. The drainage divide of the Appalachians follows a tortuous course which crosses the mountainous belt just north of the New River in Virginia. South of the New River, rivers head into the Blue Ridge, cross the higher Unakas, receive important tributaries from the Great Valley, and traversing the Cumberland Plateau in spreading gorges (water gaps), escape by way of the Cumberland River and the Tennessee River rivers to the Ohio River and the Mississippi River, and thence to the Gulf of Mexico. In the central section, north of the New River, the rivers, rising in or just beyond the Valley Ridges, flow through great gorges to the Great Valley, and then across the Blue Ridge to tidal estuaries penetrating the coastal plain via the Roanoke River, James River, Potomac River, and Susquehanna River.

What is north of the Potomac River?
What is the answer?
ANS: unanswerable
QUES: As the 20th century came to a close, Gaddafi increasingly rejected Arab nationalism, frustrated by the failure of his Pan-Arab ideals; instead he turned to Pan-Africanism, emphasising Libya's African identity. From 1997 to 2000, Libya initiated cooperative agreements or bilateral aid arrangements with 10 African states, and in 1999 joined the Community of Sahel-Saharan States. In June 1999, Gaddafi visited Mandela in South Africa, and the following month attended the OAU summit in Algiers, calling for greater political and economic integration across the continent and advocating the foundation of a United States of Africa. He became one of the founders of the African Union (AU), initiated in July 2002 to replace the OAU; at the opening ceremonies, he proclaimed that African states should reject conditional aid from the developed world, a direct contrast to the message of South African President Thabo Mbeki. At the third AU summit, held in Libya in July 2005, he called for a greater level of integration, advocating a single AU passport, a common defence system and a single currency, utilising the slogan: "The United States of Africa is the hope." In June 2005, Libya joined the Common Market for Eastern and Southern Africa (COMESA), and in August 2008 Gaddafi was proclaimed "King of Kings" by an assembled committee of traditional African leaders. On 1 February 2009, his "coronation ceremony" was held in Addis Ababa, Ethiopia, coinciding with Gaddafi's election as AU chairman for a year.

What is COMESA?
What is the answer?
ANS: Common Market for Eastern and Southern Africa
QUES: The maximum energy is a function of dielectric volume, permittivity, and dielectric strength. Changing the plate area and the separation between the plates while maintaining the same volume causes no change of the maximum amount of energy that the capacitor can store, so long as the distance between plates remains much smaller than both the length and width of the plates. In addition, these equations assume that the electric field is entirely concentrated in the dielectric between the plates. In reality there are fringing fields outside the dielectric, for example between the sides of the capacitor plates, which will increase the effective capacitance of the capacitor. This is sometimes called parasitic capacitance. For some simple capacitor geometries this additional capacitance term can be calculated analytically. It becomes negligibly small when the ratios of plate width to separation and length to separation are large.

What is a function of the amount of dielectric, the strength of dielectric and its permittivity?
What is the answer?
ANS:
The maximum energy