We are looking at a narrow hydrogen lamp through a grating element. one of the lines in the hydrogen's spectrum has a wavelength of 656.45 nm. deuterium is hydrogen's isotope, and different isotopes emit light at slightly different wavelengths. the"same" line in deuterium's spectrum has a-656.27 what minimum number of slits n is required to resolve these two wavelengths in the second order? a. b. suppose we have a grating element with 500 slits/mm. find angular separation of these two lines - in the first order.

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

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.