The yield strength for an alloy that has an average grain diameter of 6.0 × 10-2 mm is 139 mpa. at a grain diameter of 6.5 × 10-3 mm, the yield strength increases to 268 mpa. at what grain diameter, in mm, will the yield strength be 238 mpa? d=

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)