(a) Assume that a neutron traveling at 3.00(103) km/s strikes the nucleus of a motionless 11Na23 atom in a reactor core. The collision causes the neutron to recoil elastically, and it travels backward along exactly the same path it traveled as it approached the atom. Calculate the velocity of the neutron after the collision. (b) Perform the same calculation for a 3.00(103) km/s neutron striking a 3Li7 atom nucleus. Based on your answers from these two calculations, which metal would perform better for use as coolant in a LMFBR where high neutron velocity is preferred

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.