For the given Boolean expression: F(A, B, C, D) = A'.D + A. C'.D' + A. B.C (a) Identify the Static-1 Hazards. (b) Identify the Static-0 Hazards. (c) Determine the sum and/or product term(s) that must be added to the expression to eliminate the hazard(s). (d) Draw the hazard-free logic circuit.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

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

Apreheater involves the use of condensing steam at 100°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?