Suppose a system where free space is kept in a free-spacelist.

a. assume that the pointer to the free-space is lost. can thesystem
reconstruct the free-space list? if yes, how? if no, why not?

b. consider a file system similar to the one used by unix withindexed
allocation. how many disk i/o operations might be required to readthe
contents of a small local file at/usr/student/anthony/csc3453/hw4. doc?
assume that none of the disk blocks is currently being cached.

c. suggest a scheme to ensure that the pointer is never lost as aresult of
memory failure.

Asteel wire of 2 mm diameter is fixed between two points located 2 m apart. the tensile force in the wire is 250n, if its density of steel is given by 7830 kg/m3 the fundamental frequency of vibration hz? ?

Plan an experiment to measure the surface tension of a liquid similar to water. if necessary, review the ncfmf video surface tension for ideas. which method would be most suitable for use in an undergraduate laboratory? what experimental precision could be expected?

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c