Two point charges (q1 = -3.3μc and q2 = 7.6 μc) are fixed along the x-axis, separated by a distance d = 7.8 cm. point p is located at (x, y) = (d, d). be sure to use a vector approach to answer these problems. it also limit the number of calculations since sometimes you can neglect one of the charge's effects due to its location relative to the point in question.

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %