Two kilograms of air within a piston-cylinder assembly execute a Carnot power cycle within maximum and minimum temperature of 750 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 . Assuming the ideal gas model for the air, determine (a) the thermal efficiency. (b) the pressure (in kPa) and volume (in m3 ) at the beginning of the isothermal expansion. (c) the work and heat transfer for each of the four processes (in kJ). (d) Sketch the cycle on p-V coordinates

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d