Which of the following is not a simple machine? a. inclined plane b. a screw c. a bike d. a lever

Which sound characteristic is not affected by the relative motion of an object

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

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.