According to the model of the atom hypothesized by neils bohr, where can electrons be found around an atom's nucleus? a. any distance away from the nucleus. b. at fixed distances away from the nucleus. c.inside and outside of the nucleus. d. bundled together as a separate negatively charged nucleus bonded to the positively charged nucleus.

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.