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By 2017, delays and cost overruns had pushed the F-35 program's expected acquisition costs to $406.5 billion, with total lifetime cost (i.e., to 2070) to $1.5 trillion in then-year dollars which also includes operations and maintenance. [61] [62] [63] The F-35A's unit cost for LRIP Lot 13 was $79.2 million. [64]
The calendar year has 13 months with 28 days each, divided into exactly 4 weeks (13 × 28 = 364). An extra day added as a holiday at the end of the year (after December 28, i.e. equal to December 31 Gregorian), sometimes called "Year Day", does not belong to any week and brings the total to 365 days.
2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) 2,4-dichlorophenoxyacetic acid (2,4-D) 2,4,5-trichlorophenoxyacetic acid (2,4,5-T). The active ingredient of Agent Orange was an equal mixture of two phenoxy herbicides – 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) – in iso-octyl ester form, which contained traces of the dioxin 2,3,7,8-tetrachlorodibenzo ...
The Donna Reed Show is an American sitcom starring Donna Reed as the middle-class housewife Donna Stone. Carl Betz co-stars as her pediatrician husband Dr. Alex Stone, and Shelley Fabares and Paul Petersen as their teenage children, Mary and Jeff. 275 half-hour episodes were made, all in black-and-white.
Weeks and his family moved to Miami, Florida when he was 14, and he began flying model aircraft and competing on the high school gymnastics team.At 17, with only model airplane flying experience, he began building his own home-built Der Jager D-IX (a biplane powered by a four-cylinder Lycoming O-320 engine). [7]
Accelerated Reader (AR) is an educational program created by Renaissance Learning.It is designed to monitor and manage students' independent reading practice and comprehension in both English and Spanish.
This event had a gamma-ray duration of about 2 days, much longer than even ultra-long GRBs, and was detected in many frequencies for months and years after. It occurred at the center of a small elliptical galaxy at redshift 3.8 billion light years away.
X-rays have much shorter wavelengths than visible light, which makes it possible to probe structures much smaller than can be seen using a normal microscope. This property is used in X-ray microscopy to acquire high-resolution images, and also in X-ray crystallography to determine the positions of atoms in crystals .