Numerical related to distance, speed time and osciilation, time period​

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Which is the most accurate name for the covalent compound p2o3?

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.