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Among other known ancient Irish stones are the Aughrim Graveyard Stone which weighs 115 kg (254 lb) and meant to be shouldered, the Faha Stones which are a pair weighing 162 kg (357 lb) and 112 kg (247 lb), and the 215 kg (474 lb) Flag of Denn, which is a heavy, almost perfectly rectangular stone associated with strong men of the parish who ...
Fusing four free protons (hydrogen nuclei) into a single alpha particle (helium nucleus) releases around 0.7% of the fused mass as energy, [68] so the Sun releases energy at the mass–energy conversion rate of 4.26 billion kg/s (which requires 600 billion kg of hydrogen [69]), for 384.6 yottawatts (3.846 × 10 26 W), [5] or 9.192 × 10 10 ...
The standard enthalpy change of combustion, ΔH° c, expressed per mole of ammonia and with condensation of the water formed, is −382.81 kJ/mol. Dinitrogen is the thermodynamic product of combustion: all nitrogen oxides are unstable with respect to N 2 and O 2, which is the principle behind the catalytic converter.
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.Its nine provinces are bounded to the south by 2,798 kilometres (1,739 miles) of coastline that stretches along the South Atlantic and Indian Ocean; [14] [15] [16] to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; to the east and northeast by Mozambique and Eswatini ...
50 to 60% of all core radioiodine in the reactor, about 1760 PBq (1760 × 10 15 becquerels), or about 0.4 kilograms (0.88 lb), was released, as a mixture of sublimed vapour, solid particles, and organic iodine compounds. Iodine-131 has a half-life of 8 days.
Punjab (Punjabi: pañjāba , pronounced [pənˈdʒaːb] , ⓘ) is a state in northwestern India.Forming part of the larger Punjab region of the Indian subcontinent, the state is bordered by the Indian states of Himachal Pradesh to the north and northeast, Haryana to the south and southeast, and Rajasthan to the southwest; by the Indian union territories of Jammu and Kashmir to the north and ...
Mount Whitney (Paiute: Too-man-i-goo-yah [6] or Too-man-go-yah [7]) is the highest mountain in the contiguous United States, with an elevation of 14,505 feet (4,421 m). [1] It is in East–Central California, in the Sierra Nevada, on the boundary between California's Inyo and Tulare counties, and 84.6 miles (136.2 km) [8] west-northwest of North America's lowest topographic point, Badwater ...
Installed faced fiberglass batt insulation with its R-value visible (R-21) [1]. The R-value is a measure of how well a two-dimensional barrier, such as a layer of insulation, a window or a complete wall or ceiling, resists the conductive [2] flow of heat, in the context of construction. [3]