Determine the specifications (unstretched length and spring constant) for the elastic cord to be used at a bungee-jumping facility. Participants are to jump from a platform 150 ft above the ground. When they rebound, they must avoid an obstacle that extends 15 ft below the point at which they jumped. In determining the specifications for the cord, establish reasonable safety limits for the minimum distances by which participants must avoid the ground and obstacle. Account for the fact that participants will have different weights and heights. If necessary, specify a maximum allowable weight for participants. Write a brief report presenting your analyses and making a design recommendation for the specification of the cord.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process

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