There are both practical and theoretical difficulties in determining h. The practical difficulties can be illustrated by the fact that the two most accurate methods, the watt balance and the X-ray crystal density method, do not appear to agree with one another. The most likely reason is that the measurement uncertainty for one (or both) of the methods has been estimated too low it is (or they are) not as precise as is currently believed but for the time being there is no indication which method is at fault.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is a main practical difficulty in determining n?
Ah, so.. the two most accurate methods, the watt balance and the X-ray crystal density method, do not appear to agree with one another

Distinctive and self-identified black communities have been reported in countries such as Iraq, with a reported 1.2 million black people, and they attest to a history of discrimination. African-Iraquis have sought minority status from the government, which would reserve some seats in Parliament for representatives of their population. According to Alamin M. Mazrui et al., generally in the Arabian Peninsula and neighboring countries, most of those of visible African descent are still classified and identify as Arab, not black.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who is seeking minority status from the government?
Ah, so.. African-Iraquis

According to the U.S. Census Bureau, in 2004, Miami had the third highest incidence of family incomes below the federal poverty line in the United States, making it the third poorest city in the USA, behind only Detroit, Michigan (ranked #1) and El Paso, Texas (ranked #2). Miami is also one of the very few cities where its local government went bankrupt, in 2001. However, since that time, Miami has experienced a revival: in 2008, Miami was ranked as "America's Cleanest City" according to Forbes for its year-round good air quality, vast green spaces, clean drinking water, clean streets and city-wide recycling programs. In a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States (of four U.S. cities included in the survey) and the world's fifth-richest city, in terms of purchasing power.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): As of 2004, what city was the poorest in the United States?
Ah, so..
Detroit