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Air at one atmospheric pressure and at 20°C flows across a 12 mm diameter sphere witha free stream velocity of 5 m/s. A small heater insyde the sphere maintains the surface temp. at 80 °C. calculate the heat lost by the sphere for the given conditions.
a construction crew lifts approximantely 560lb of material serveral times during the day from a flatbed truck to a 32
a home buyer can afford to spend no more than 1500month on mortgage payments. suppose that the interest rate is 6 that
in a quasi-equilibrium process in a closed system a gas expands from a volume of 0.15m3 and a pressure of 120kpa to a
water flows through a pipe at an average temperature of t70degc. the inner and outer radii of the pipenbspare r16cm and
design of absorption column and the cooler process design of other units should be completed along with pipe sizes. the
a 200-kg 5-m-wide rectangular gate shown innbspthe figure is hinged at b and leans against thenbspfloor at a making an
a stack gas flowing at 80 m3min at t 25 degree c and 1 atm contains approximately 75 n2 5 o2 8 h2o and 12 co2. a
What is the difference between corrosion and stress corrosion cracking of pipelines? Which of them is more dangerous and why?
A lap joint needs to be designed using 20-mm diameter bolts to carry a load of 120 kN on the connecting plates. If the shear stress in each rivet is not to exceed 90 MPa, determine the number of bolts needed.
an adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the refrigerant from the
the position of a point p on a line is given by the equation x t sinpi t2. the point starts moving at t0. find the
the vertical motion of mass a is defined by the relation x10sin2t15cos2t100. determine a the position velocity and
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