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A wet-bulb thermometer consists of a mercury-in-glass thermometer covered with a wetted (water) fabric. When suspended in a stream of air, the steady-state thermometer reading indicates the wet-bulb temperature Twb. Obtain an expression for determining the relative humidity of the air from knowledge of the air temperature (T∞), the wet-bulb temperature, and appropriate air and water vapor properties. If T∞ = 45°C and Twb = 25°C, what is the relative humidity of the airstream?
Using these expressions show that when the Engineering strain is small, all three strain measures converge to the same value.
A piston-cylinder assembly fitted with a spring. The cylinder contains water, initially at 538oC, and the spring is in a vacuum. The piston face, which has an area of 125 cm2 , is initially at x1=50 cm.
a 48-tonne ferry strikes a dock at 3 kmh. what average force does it exert on a dock if it is brought to rest over a
a pure aluminum conical section with cross sectional diameter of d ax12. a 0.5meters12. the small end of the cone is
Compute the drag exerted on the vehicle by the bar when the vehicle travels at 65 mph through still air at - 20°F
When unloaded, the two identical cantilever beams just make contact at B. Determine the reactive couples acting on the beams at A and C when the uniformly distributed load is applied to BC.
On a hot summer day, a student turns his fan on when he leaves his dorm room in the morning. The dorm is well insulated but not air conditioned, and all of the doors and windows are closed. Draw a simple picture of this room after the student leaves ..
Determine the work done and State the energy transfer within this isothermal process explaining your answer.
a 2 cm horizontal jet of water with a velocity of 15 ms is spraying onto a vertical plate attached to a cart moving
calculate the force and pressure acting across the pelvis and at the feet of a 150 lbm person. model the body using
Carbon dioxide gas at 25°C, 5.1 atm enters a heat exchanger operating at steady state. An equilibrium mixture of CO2, CO, and O2 exits at 2527°C, 5 atm. Determine, per kmol of CO2 entering,
a machine of mass 125kg supported by springs of total stiffness k750knm. the rotating parts have a mass of 2.5kg which
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