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A model boat consisted of open topped rectangular metal can containing sand as a ballast. If the can has a width of 100 mm, a length of 500 mm, and a mass of 1kg, determine the mass of sand (kg) required for the can to be immersed to a depth of 250 mm in sea water (RD=1.03)

A hydrogen filled balloon has a total weight force of 9.5kN. If the tension in the mooring cable anchoring the balloon to the ground is 15.75kN, determine the upthrust experienced by the balloon and its volume. Take the density of air as 1.23 kg/m3

10/17/2019 Day07: Lecture EX&HW

10/24/2019 Day08: Lecture EX&HW (Internal flow)

10/31/2019 Day09: Review

11/7/2019 Day10: Midterm

How are you today? How was the EX06 and HW06? Simple or difficult?

Go to youtube and chat with me.

https://www.youtube.com/watch?v=IjfZscZ81K0&feature=youtu.be

Complete the following questions and submit them next week. If you have a question, please see me next week.

Hi Class,

Today is an online class. Who is online now? Post your name on this Day06 page.

And start working on EX06 and HW06. Submit them in the next class.

A U-tube manometer is connected to a closed tank, shown on the whiteboard, containing oil having a density of 860 kg/m3, the pressure of the above the oil being 3500Pa. If the pressure at point A in the oil is 14000 Pa and the manometer fluid has a RD of 3, determine

1) the depth of oil z1

2) the differential reading z2 on the manometer.

1. If the air pressure at sea level is 101.325kPa and the density of air is 1.2kg/m3, calculate the thickness of the atmosphere (m) above the earth.
2. What gauge pressure is experienced by a diver at a depth of 10m in seawater of relative density 1.025?

Hi Class,

Tell me what topics did we discussed last week?