What mass of iron can be heated from 40 ° C to 70 ° C by bringing 30 k J heat if the specific heat capacity of iron is 420 J/kgK I FAILED THIS TEST 2 TIMES PLS HELP​

How do we measure or think of speed in the united states?

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.

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the