You are 15.0m from the source of a sound. at that distance, you hear it at a sound level of 20.0db. how close must you move to the sound to increase the sound level to 60db? i think its 45.0cm? 15.0cm 45.0cm 55.0cm 60.0cm 85.0cm

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

The least penetrating form of radiation is

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.