Suppose that the radius of the circular path is r when the speed of the rocket is v and the acceleration of the rocket has magnitude a. if the radius and speed are increased to 2r and 2v respectively, what is the magnitude of the rocket's subsequent acceleration?

a) 3 b) 2a c) a d) 4a e) 8a

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.