a block of mass 2 kg slides along a horizontal tabletop. a horizontal applied force of 12 n and a vertical applied force of 15 n act on the block, as shown above. if the coefficient of kinetic friction between the block and the table is 0.2, the frictional force exerted on the block is most nearly

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

What ia the energy of an object because of its potential and kinetic energies

Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*