(c) Due to up thrust (d) Due to liquid pressure
B. Answer the following questions.
1. State Pascal's law. Write any two applications of Pascal's law.
2. What is hydraulic lift?
3.
4.
How does hydraulic press work? Write any two uses of hydraulic
press.
We experience nose bleeding while trekking to high altitud
why?
What is up thrust? What is the relation between density
liquid and it's up thrust?
The pieces of ice float on water. Give reason.
5.
6.
7
Why is it easier to swim in sea than in a nondor river?

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*