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Calculate the density of air inside a house and outside a house using 20°C inside and -25°C outside. Use an atmospheric pressure of 85 kPa. Do you think there would be a movement of air from the inside to the outside (infiltration), even without a wind? Explain.
A mild structural steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam.
Consider a submarine cruising at 0.18 m/s far below the surface in sea water at 20 degree C. A 1:50-scale model of the submarine is to be tested in a towing tank. The tests are performed in fresh water at 20 degree C. At what speed should the model b..
Complex loading (bending and compression), A steel chimney is 28m high, 1.4m external diameter, and 20mm thick. It is rigidly fixed at the base and is acted upon by a horizontal wind pressure of intensity 1.
Find the torque T on the conductor segment about an origin at point P (1,0,0) as a function of l(i.e. the solution will be an equation for T as a function of the parameter l).
Which of the following causes a system to be irreversible? All of the other choices Mixing two different substances
10 kg of ammonia is at 0c contained in a cylinder at 516 kpa by a free moving piston. it is heated until it vaporizes
The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.
Consider a velocity field where the x and y components of velocity are given by u=(cy/(x^2 + y^2)) and v= (-cx/(x^2 + y^2)) where C is constant. Calculate the vorticity of the vortex flow
consider the carburizing of a steel bar to create a hard surface. to obtain the desired hardness we need to control the
A river is flowing due south at 5 m/s at a latitude of 45°. Calculate the acceleration of a particle floating with the river relative to a fixed reference frame. The radius of the Earth is 6400 km.
the silver medal awarded to the second place winner in 2002 salt lake city winter olympics had a composition of 92.5 at
You are the lead engineer of a company responsible for monitoring emissions from vehicles that your company produces. It is discovered that a "cheat" device was installed on the vehicles your company produces that lets your company's vehicles pass..
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