1 For example, flywheels are used in reciprocating engines because the energy source, torque from the engine, is intermittent. 2  Delivering energy at rates beyond the ability of a continuous energy source.
CongresswomanTammy Duckworth is a new mom. She gave birth to a baby girl named Abigail Tuesday. It is the first child for the 46-year-old Duckworth and her husband Bryan. Because of her age and injuries as an Iraq War veteran, Duckworth's pregnancy was considered high-risk. Go Search
Her office said she will be the first Senator to give birth while in office. Nine other women have given birth while serving in the House of Representatives. Rep. Cathy McMorris-Rodgers, R-Wash., has had three children while serving in the House. Duckworth lost both legs when the Army helicopter she was piloting was shot down in Iraq in 2004.