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Nonoxynol-9 is a common ingredient of most vaginal and anal lubricants due to its spermicidal properties. A 2004 study found that over a six-month period, the typical-use failure rates for five nonoxynol-9 vaginal contraceptives (film, suppository, and gels at three different concentrations) ranged from 10% to 20%.
The 2025 Formula Winter Series will be the third season of the Formula Winter Series. It is a multi-event motor racing championship for open wheel , formula racing cars regulated according to FIA Formula 4 regulations, based in Spain.
A single season in Formula 4 may not exceed €100,000 in costs. The F4 Japanese Championship was launched by the GT Association on 16 December 2014, as one of the second phases of Formula 4 championships to be launched following the Italian F4 Championship and Formula 4 Sudamericana which launched in 2014. [ 1 ]
An IT grade is an internationally accepted code system for tolerances on linear ... 4 6 9 13 21 33 ... 4.20: 6.60: 10.50: 16.50 1,250 1,600 15 21 29 39 55 78 125 ...
The 2024 F4 Chinese Championship (Shell Helix FIA F4 Chinese Championship) was the tenth season of the F4 Chinese Championship.It began on 19 April at Shanghai International Circuit and ended on 20 October at Zhuhai International Circuit.
Oscar Wurz became the 2024 Formula 4 CEZ Champion. The 2024 Formula 4 CEZ Championship was the second season of the Formula 4 CEZ Championship, a motor racing series for the Central Europe regulated according to FIA Formula 4 regulations, and organised and promoted by the Automobile Club of the Czech Republic (ACCR), Krenek Motorsport and HM Sports.
The 2019 Formula 4 United States Championship season was the fourth season of the United States Formula 4 Championship, a motor racing series regulated according to FIA Formula 4 regulations and sanctioned by SCCA Pro Racing, the professional racing division of the Sports Car Club of America.
The 2023 F4 Spanish Championship was the eighth season of the F4 Spanish Championship.It was a multi-event motor racing championship for open wheel, formula racing cars regulated according to FIA Formula 4 regulations, based in Spain.