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Assume that a woman must breathe a constant mass rate of air to maintain her metabolic processes. If she inhales and exhales 16 times per minute at sea level, where the temperature is 59°F (15°C) and the pressure is 14.7 psia (101 kPa), what would you expect her rate of breathing at 18,000 ft (5486 m) to be? Use standard atmospheric conditions.
The 10-lb collar starts from rest at A and is lifted with a constant speed of 2 ft>s along the smooth rod. Determine the power developed by the force F at the instant shown.
a one dimensional wall of material kw10wmk is 50 mm thick with uniform heat generation qlsquolsquolsquo5106wm3. the
a dishwasher circulates water at a rate of 55 gpm with a small pump. the total head ppg v22g leaving the pump is
Find the hammer blow, maximum variation in tractive effort and maximum swaying couple. Find the maximum velocity of the locomotive if maximum allowable dead load on each wheel is limited to 40kN
Find the diameter of the steel cables so that the natural frequency of vibration of the crate is at least twice the frequency of the rotor blades.
The annual holding cost rate for this type of item has been estimated at 28%. What option is more economical?
(Spherical polar coordinates) When a function f(r) is specified in polar coordinates, it is usual to express grad f in terms of the partial derivatives of f with respect to r, θ and φ and the unit vectors ur, uθ and uφ in the directions of increas..
a 1 ton car is climbing a 200 m long uphill road with a slope of 30deg from horizontal. what is the power required to
If the bottom surface is colder than the top surface, what is the nature of conditions within the container? For example, will there be vertical gradients of the species (O2 and N2) concentrations? Is there any motion of the air? Does mass transfe..
if the bar has clockwise angular velocity of 10 rad/s and Va= 20m/s what are coordinates of instantaneous center of the bar, and what is the value of Vb?
An air conditioner in the airport of Timbuktu runs a cooling system using R-410a with a high pressure of 1500 kPa and a low pressure of 200 kPa. It should cool the desert air at 45 degrees C down to 15 degrees C. Find the cycle COP. Will the syste..
a fully loaded lorry has a mass of 10 tonnes and is travelling along a road at uniform velocity when the brakes are applied and the lorry is brought to rest. if the deceleration is 2m/s2 and the coefficient of rolling friction is 0.15, determine t..
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