SMANSA Science

Ahmed asked:


A rectangular gate 1.8 m long and 1.2 m high lies in a vertical plane with its center 2.1 m below a water surface. Calculate magnitude, direction, and location of the total force on the gate?
Thank you Carl (gintable),
I got the same answer and my solution is on this photo:
http://img193.imageshack.us/img193/3256/33302140.jpg

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ishiru asked:


as you walk past a cup of coffee sitting on a desk, the coffee has a velocity relative to you. would you describe the coffee with fluid statics or fluid dynamics?

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jh asked:


A 1.70 -diameter vat of liquid is 2.90 deep. The pressure at the bottom of the vat is 1.30 . What is the mass of the liquid in the vat?

Styrofoam has a density of . What is the maximum mass that can hang without sinking from a 80.0 -diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.

A gymnasium is 11.0 high. By what percent is the air pressure at the floor greater than the air pressure at the ceiling?

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Daniel asked:


If a person at an altitude of 15,000 ft takes in the same volume of air with each breath as she does while walking at sea level, what is the ratio of the mass of oxygen inhaled for each breath at this high altitude compered to that at sea level?

please help?

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Daniel asked:


The troposphere extends to an altitude of 11km where the pressure is 22.6 kPa. in the next layer, the stratosphere, the temperature remains constant at -56.5 celcius. determine the pressure and density in this layer at an altitude of 15 km. assuming g = 9.77 m/s^2

please help me!

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heidee_0814 asked:


as you walk past a cup of coffee sitting on a desk, the coffee has a velocity relative to you. would you describe the coffee with fluid statics or fluid dynamics?

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mikeo853 asked:


There are two dams of equal area. One dam holds back a very large lake, the other holds back a very narrow river. Which dam has to be built stronger?

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