Problem: Question: "What must physical action be in classical statistical mechanics?" Context: "Classical statistical mechanics requires the existence of h (but does not define its value). Eventually, following upon Planck's discovery, it was recognized that physical action cannot take on an arbitrary value. Instead, it must be some multiple of a very small quantity, the "quantum of action", now called the Planck constant. Classical physics cannot explain this fact. In many cases, such as for monochromatic light or for atoms, this quantum of action also implies that only certain energy levels are allowed, and values in between are forbidden." Answer:

A: some multiple of a very small quantity

Problem: Question: "What sentiments was Nasser displaying during his speech?" Context: "On 26 July 1956, Nasser gave a speech in Alexandria announcing the nationalization of the Suez Canal Company as a means to fund the Aswan Dam project in light of the BritishAmerican withdrawal. In the speech, he denounced British imperialism in Egypt and British control over the canal company's profits, and upheld that the Egyptian people had a right to sovereignty over the waterway, especially since "120,000 Egyptians had died (sic)" building it. The motion was technically in breach of the international agreement he had signed with the UK on 19 October 1954, although he ensured that all existing stockholders would be paid off." Answer:

A: Egyptian people had a right to sovereignty over the waterway

Problem: Question: "What is the upper limit of age of inner heartwood?" Context: "It is remarkable that the inner heartwood of old trees remains as sound as it usually does, since in many cases it is hundreds, and in a few instances thousands, of years old. Every broken limb or root, or deep wound from fire, insects, or falling timber, may afford an entrance for decay, which, once started, may penetrate to all parts of the trunk. The larvae of many insects bore into the trees and their tunnels remain indefinitely as sources of weakness. Whatever advantages, however, that sapwood may have in this connection are due solely to its relative age and position." Answer:

A: thousands, of years old

Problem: Question: "Why is the secondary format mentioned not recognized with the International Telecommunication Union?" Context: "It also includes the alternative 14401152 HDMAC scan format. (According to some reports, a mooted 750-line (720p) format (720 progressively scanned lines) was viewed by some at the ITU as an enhanced television format rather than a true HDTV format, and so was not included, although 19201080i and 1280720p systems for a range of frame and field rates were defined by several US SMPTE standards.)" Answer:

A:
was viewed by some at the ITU as an enhanced television format rather than a true HDTV format