Suppose you have an ascii character that you know to be a letter. but you don't know whether it is upper-case or lower-case. what is the best way to transform this character (if needed) into a upper-case character? select one: take the two's complement of the original character. or the original character with the value xffdf. subtract #20 from the original character. or the original character with the value x20. and the original character with the value xffdf. subtract x20 from the original character. and the original character with the value x20.

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed