Write an one page paper about a athlete that sacrificed his career during the civil rights movement in America. List: Kareem Abdul Jabber, Jim Brown, Tommie Smith and John Carlos, Bill Russell, Althea Gibson, Arthur Ashe.

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.