1.For the state of stress shown, Determine the range of values of thetafor which the normal stress theta x primeis equal to or less tahn 50 MPa
2.A van operator picks people up in a downtown area. The van leaves as soon as 6 people have arrived. On average, 24 passengers arrive each hour. What is the probability that the period between bus department is more than 15 minutes. Assume the Poisson distribution applies.
3.What are the specifications need to be specified while creating a design for waterways?what are their uses?how are they maintained?
4.For 6.70 kg of a magnesium-lead alloy, is it possible to have the masses of primary a and total a of 4.23 kg and 6.00 kg, respectively, at 460°C (860°F)? Why or why not?