Consider a memory system with a 8-block cache memory and a larger main memory. assume the cache is initially empty. if the processor accesses main memory blocks b2, b15, b16, and b26 (block number starts from bc) repeatedly three times, answer the questions below. 1) if a direct-mapped cache is used, what will be the cache hit rate? put the answer in the box. a. 25% b. 33.3% c. 50% d. 66.7%

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?

The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object

Agas is compressed from vi 0.3 m, p 1 bar to of v2 0.1 m3, p2--3 bar. pressure and volume are related linearly during the process. for the gas, find the work, in kj.