Astaff technician in your lab tests a cemented sand specimen in direct shear, under a normal stress of 50 kpa. the technician shows you results that indicate that during the shearing stage, the specimen exhibits a peak shear stress of 65 kpa. a correct assessment is:

Which feature indicates that mars resides in the inner region of the solar system

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?