Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- When an oblique shock strikes a solid wall, it reflects as ashock of sufficient strength to cause the exit flow Ma3 to beparallel to the wall, as in Fig. For airflow with Ma1 =2.5 and p1 = 100 kPa, compute Ma3, p3, and the angle ϕ.arrow_forwardAir flows in a duct having cross-sectional area A = 0.861 m², flow speed V 10 meters / sec, pressure P = 100 kPa, temperature T = 300 °K. Determine the mass-flow-rate, m(dot) in kg / sec.arrow_forwardConsider the Lockheed SR-71 Blackbird shown in flying at a standard altitude of 25 km. The pressure measured by a Pitot tube on this airplane is 3.88 × 104 N/m2.Calculate the velocity of the airplane.arrow_forward
- Q1: Air at 35 °C enters a 7-m-long section of a rectangular duct of cross section 15 cm x 20 cm made of commercial steel (&= 0.000045 m) at an average velocity of 7 m/s. Disregarding the entrance effects, determine the fan power needed to overcome the pressure losses in this section of the duct. Air properties at 35 °C: p= 1.145 kg/m³, u = 1.895 x 105 kg/m.s, and v= 1.655 × 105 m²/s.arrow_forwardAir at a temperature of 20 oC flows at a speed of 10 m/s through a rectangular duct made of wrought iron with a cross section of 30 cm x 50 cm and a length of 20 m. Calculate the required fan powerarrow_forwardcan someone help me? Thank you.arrow_forward
- (6) A nozzle is required to pass 1.5 kg/s of air. The inlet conditions are a zero velocity, a pressure of 350 kPa and a temperature of 425°C. If the air is to expand to 140 kPa, determine the throat area required. Also calculate the exit velocity and exit area if the nozzle efficiency is 95 %. Assume that friction takes place in the diverging part only.arrow_forwardA horizontal air jet with a mass flow rate of (m) and a velocity of (V) strikes the inside surface of a hollow hemisphere. Assume the magnitude of air velocity remains constant ( Vin=Vout=V). Determine the horizontal anchoring force (F) needed to hold the hemisphere in place for the following conditions: m = 4.71 kg/s and V = 20 m/s F F= 11.8 N F=105.9 N F= 47.2 N F=188.4 Narrow_forward
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