The winning time for the 2005 annual race up 86 floors of the empire state building was 10 min and 49 s . the winner's mass was 60 kg . if each floor was 3.7 m high, what was the winner's change in gravitational potential energy? if the efficiency in climbing stairs is 25 %, what total energy did the winner expend during the race? how many food calories did the winner "burn" during the race? what was the winner's metabolic power in watts during the race up the stairs? express your answer using two significant figures.

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.