Work and power are different because

work involves force and distance while power involves force and velocity.

work involves distance and mass while power involves distance and time.

work involves energy and time while power involves force and mass.

work involves velocity and time while power involves energy and force.

is it a or b? i need 100 on this question so someone me that really knows this stuff. you!

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*