Some straight wave fronts hit a barrier as shown here. Which of the positions shown (A, B, C, D) will the reflected waves pass through?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Which word expression describes how much to calculate pressure