A critical component for a mechanical system will be subjected to a 0.01 Hz cyclical stress during operation (0.01 cycles per second). The stress will fluctuate between a tensile load of 150 MPa and a compressive load of -250 MPa. The design calls for a survival confidence limit of 10% (i. e. 10% failure rate acceptable). Approximately how long, in days, can the component be used before it must be replaced during maintenance

Which of the following is not am example of a polymer? protein nylon kevlar concreta

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.