You are designing a pmd and optimizing it for low energy. the core, including an 8 kb l1 data cache, consumes 1 w whenever it is not in hibernation. if the core has a perfect l1 cache hit rate, it achieves an average cpi of 1 for a given task, that is, 1000 cycles to execute 1000 instructions. each additional cycle accessing the l2 and beyond adds a stall cycle for the core. based on the following specifications, what is the size of l2 cache that achieves the lowest energy for the pmd (core, l1, l2, memory) for that given task?

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false