The earth's gravity keeps us from flying out to space. how can you explain that we have a stronger gravitational attraction to the earth than to the sun? we are closer to the sun than the earth. we are closer to the earth than the sun. the sun has a larger mass so it has less gravitational pull. the sun is bigger, but has a less mass than the earth.

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.