1.10 (a) Starting from properties of air at the mean sea level determine temperature, pressure, density, kinematic viscosity and velocity of sound at altitudes of 2000, 7000 and 15000 metres. (b) Determine the Mach numbers of aircrafts flying at 1080 km/hr at these altitudes. Ans. Z T(K) p(bar) P(kg/m³) v(m²/s) a(m/s) M 2000 275.15 0.795 1.006 17.176 x 10-6 332.6 0.902 7000 242.65 0.411 0.589 26.485 x 10-6 312.4 0.960 15000 216.65 0.120 0.194 73.04 x 10-6 295.2 1.016

1.10 (a) Starting from properties of air at the mean sea level determine temperature, pressure, density, kinematic viscosity and velocity of sound at altitudes of 2000, 7000 and 15000 metres. (b) Determine the Mach numbers of aircrafts flying at 1080 km/hr at these altitudes. Ans. Z T(K) p(bar) P(kg/m³) v(m²/s) a(m/s) M 2000 275.15 0.795 1.006 17.176 x 10-6 332.6 0.902 7000 242.65 0.411 0.589 26.485 x 10-6 312.4 0.960 15000 216.65 0.120 0.194 73.04 x 10-6 295.2 1.016

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

a) An aircraft's instruments measure an air temperature of -10° C and an air pressure of 90 kPa. What is the air density for these conditions? b) What are the pressure and density altitudes of the aircraft? Use the following portion of the standard atmosphere tables. Altitude (m) 75 150 250 300 450 600 750 900 1000 1200 Pressure (KPa) 101.3 100.4 99.5 98.5 97.7 95.9 94.1 92.4 90.8 89.1 87.5 Density (kg/m³) 1.2250 1.2162 1.2075|| 1.1959| 1.1901| 1.1730| 1.1560|| 1.1392 1.1226| 1.1116| 1.0900
Q1: An aircraft is flying with the same Mach no. at elevations of 9500 m and 11500 m. If the aircraft flies 53 m-s1 slower at the altitude of 11500 m, determine its', (a) Mach no. (b) Mach angle and (c) Air pressure at each altitude. Altitude (m) Temperature (°C) Density (kg-m³) 0.516 9500 11500 - 42.2 - 58.3 0.309
P1.8 The air pressure at the foot of a mountain is 101 kPa while at the top of the mountain the pressure and temperature are 75.7 kPa and 267 K respectively. The temperature of the atmosphere decreases linearly with altitude at the rate of 0.0065 K.m. Calculate the height of the mountain. [Answer: 2317 m]
1: 18 PM | 19.0KB/ 65 BME ASsignment 2 .pdf Sr. Assignment Questions Bloom's No taxonomy level What is the physical significance of gas constant? Write about combined gas law, Gas constant and non-flow process? Prove that Cp-Cy=R with usual notation. 1 R 2 R 3 U 4 Represent the following compression process on p-v diagram with the same initial R condition (1) constant volume (2) constant pressure (3) Isothermal (4) adiabatic Differentiate isothermal process and adiabatic process. Show that change in internal energy AU = m Cv (T2-T1) for perfect gas. 5 R A 7 Prove that dryness fraction + wetness fraction= 1 R What is dryness fraction? Explain throttling calorimeter A sample of gas occupies 24.0 m³ at100.0K.Determineitsvolume at 200.0K 10 | 1kg of air at a 9 bar pressure and 80 °c temperature undergoes a non-flow work Polytropic process. The law of expansion in pV1l=C. the pressure falls to 1.4 bar during process. Calculate (1) final temp. (2) Work done (3) change in internal energy (4)…
A volume of 400 cm3 of air is measured at a pressure of 740 mmHg absolute and a temperature of 18 deg.C. What will be the volume at 760 mmHg and 0 deg.C?
Box your final answer and round to the nearest 2 DECIMAL PLACES. For the 2nd part, fill up the table of formulas below on a separate paper or index card • Four pounds of air gain 0.491 Btu/°R of entropy during a non- flow isothermal process. If P1 = 120 psia and V2 = 42.5 ft°, find a. P2, V1, and T1 b. Wn c. Q and d. Change in U. Process Isothermal Isentropic Polytropic Isometric Isobaric P-V and T-S diagram PV,T relations W W, C used for Q au ΔΗ AS
Hurricane Irene registered an atmospheric pressure of 982 mbar in August 2011. Hurricane Katrina registered an atmospheric pressure of 86.2 kPa in September 2005. What was the difference in pressure between the two hurricanes in the units below? Show work please (A) millimeters of mercury (B) atmospheres (C) millibars
How much heat is absorbed by a 27.0 g sample of water in going from liquid at 38.2 °C to steam at 119 °C and a pressure of 1.00 atm? Use the data in the following table. Express your answer in kilojoules. Pay attention to units! Some Thermal Properties of Water Property Specific heat (J/g °C) Solid Liquid Gas AHfusion (kJ/mol; at 0 °C) A Hvaporization (kJ/mol; at 100 °C) A Hsublimation (kJ/mol) Melting point (°C) Boiling point (°C) Answer: Value 2.07 4.18 2.01 6.01 40.6 50.9 0 100
Fill in the data omitted in the following table for water. Pressure Temperature Specific volume Enthalpy Quality (f/bm) (F) (psia) (Btu/lbm) x(%) State (a) 500 0.650 (b) 250 1000 (c) 600 700 (d) 800 1399.1 (e) 300 90 (f) 1000 200
23 ft^3 of air was drawn from a ventilation duct and measured by means of a dry gas meter. the meter's temperature averaged 60 F and the meter gage pressure was -1.9" H2O. Barometric pressure during the sampling was 752 mm Hg. Calculate the volume in standard cubic feet and in standard cubic meter (25C, atm)
For most gases at standard or near standard conditions, the relationshipamong pressure, density, and temperature is given by the perfect gasequation of state: p = ρRT, where R is the specific gas constant. For airat near standard conditions, R = 287 J/(kg · K) in the International System of Units and R = 1716 ft · lb/(slug · ◦R) in the English Engineering System of Units. Using the above information, consider the following two cases: a. At a given point on the wing of a Boeing 727, the pressure andtemperature of the air are 1.9 × 104 N/m2 and 203 K, respectively.Calculate the density at this point.b. At a point in the test section of a supersonic wind tunnel, the pressureand density of the air are 1058 lb/ft2 and 1.23 × 10−3 slug/ft3,respectively. Calculate the temperature at this point.
ASAP Pls dont round off initial values, round off final ans only ty The pressure 24 meter below a liquid is 786.41 kPa, determine its mass density (kg/m³).