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The tape was 0.1 inches (2.5 mm) wide and 0.003 inches (0.076 mm) thick running at 5 feet per second (1.5 m/s) past the recording and reproducing heads. This meant that the length of tape required for a half-hour program was nearly 1.8 miles (2.9 km) and a full reel weighed 55 pounds (25 kg).
From the mid-1950s through the 1960s, in the U.S. the common home record player or "stereo" (after the introduction of stereo recording) would typically have had these features: a three- or four-speed player (78, 45, 33 + 1 ⁄ 3, and sometimes 16 + 2 ⁄ 3 rpm); with changer, a tall spindle that would hold several records and automatically ...
[2] The entirety of Community Board 6, which covers areas around Park Slope and Carroll Gardens, had 109,351 inhabitants as of NYC Health's 2018 Community Health Profile, with an average life expectancy of 81.4 years. [92]: 2, 20 This is slightly higher than the median life expectancy of 81.2 for all New York City neighborhoods.
Thus, gravity must be divided into its component vectors. Only the fraction of gravity equal to the cosine of the angle of fire with respect to the horizon affects the rate of fall of the bullet, with the remainder adding or subtracting negligible velocity to the bullet along its trajectory. To find the correct zero, the sniper multiplies the ...
Al 2 O 3: 6.9 23 18 12 — Fe 2 O 3: 3 11 6 1 — CaO 63 5 21 40 < 1 MgO 2.5 — — — — SO 3: 1.7 — — — — Specific surface (m 2 /kg) [d] 370 420 420 400 15,000 – 30,000 Specific gravity 3.15 2.38 2.65 2.94 2.22 General purpose Primary binder Cement replacement Cement replacement Cement replacement Property enhancer
[6] [7] In 1876 a single-shot breech-loading rifle with an automatic breech-opening and cocking mechanism using a form of blowback was patented in Britain and America by the American Bernard Fasoldt. [8] In 1883 Hiram Maxim patented a blowback-operated rifle. In 1884 he would also patent a toggle-lock delayed-blowback-operated rifle. [9]
A unit of area traditionally defined as the area of one chain (66 feet) by one furlong (660 feet), equivalent to 43,560 square feet (0.001563 sq mi; 4,047 m 2), or about 0.40 hectare. acreage A quantity of land; several acres considered collectively, united by their ownership, management, usage, geographical location, or some other unifying ...