Pa, symbol for the element protactinium protactinium , radioactive chemical element; symbol Pa; at. no. 91; at. wt. 231.0359; m.p. greater than 1,600°C;; b.p. 4,026°C;; sp. gr. 15.37 (calculated); valence +4, +5. Protactinium is a malleable, shiny silver-gray radioactive metal.
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pa, pah NZ
pA
Pa
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pa, pah NZ
1. a Maori village or settlement
2. History a Maori defensive position and settlement on a hilltop
pA
(electricity)
Pa
(mechanics)
(chemistry)
Pa
Symbol for pascal; a unit of pressure.
PA
On drawings, abbr. for public address system.
pascal (Pa)
The Standard International unit of pressure; 1 pascal is equal to 1 newton per square meter.
| (networking) | pa - The country code for Panama. |
Pennsylvania State Information
Phone: (717) 787-2121
www.state.pa.us
Area (sq mi): 46055.24 (land 44816.61; water 1238.63). Pop per sq mi: 277.30.
Pop 2005: 12,429,616. State rank: 0. Pop change: 2000-20005 1.20%; 1990-2000 3.40%. Pop 2000: 12,281,054 (White 84.10%; Black or African American 10.00%; Hispanic or Latino 3.20%; Asian 1.80%; Other 2.80%). Foreign born: 4.10%. Median age: 38.00.
Income 2000: per capita $20,880; median household $40,106; Pop below poverty level: 11.00%. *Personal per capita income 2000-2003: $29,695-$31,911.
Unemployment 2004: 5.40%. Change from 2000: 1.20%. Median travel time to work: 25.20 minutes. Working outside county of residence: 27.60%.
www.state.pa.us
Area (sq mi): 46055.24 (land 44816.61; water 1238.63). Pop per sq mi: 277.30.
Pop 2005: 12,429,616. State rank: 0. Pop change: 2000-20005 1.20%; 1990-2000 3.40%. Pop 2000: 12,281,054 (White 84.10%; Black or African American 10.00%; Hispanic or Latino 3.20%; Asian 1.80%; Other 2.80%). Foreign born: 4.10%. Median age: 38.00.
Income 2000: per capita $20,880; median household $40,106; Pop below poverty level: 11.00%. *Personal per capita income 2000-2003: $29,695-$31,911.
Unemployment 2004: 5.40%. Change from 2000: 1.20%. Median travel time to work: 25.20 minutes. Working outside county of residence: 27.60%.
List of Pennsylvania counties:
Pennsylvania Parks
- US National Parks
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- Parks and Conservation-Related Organizations - US
- National Wildlife Refuges
- National Trails
- National Scenic Byways
- National Heritage Areas
- National Forests
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