Determine the period and frequency in SI units, for the following: a.) A human eye blinks 12 times in 48 s
b.) A compact disc rotate at a rate of 210 revolutions per minute

Why is metal often used for cooking pan?

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.

In which of the following can you not find plasma