12. The acceleration of gravity is given as a function of elevation above sea level by the relationg-9.81 - 3.32 X 10-6 h (m/s³) with 'h' measured in meters. What is the weight of an airplane at10,000ft elevation when its weight at sea level is 40 kN?a. 39.9583KNb. 39.9584kNc. 39.9587kNd. 39.9522kN13. How many kilojoules in one (1) BTU?a. 778b. 2.11c. 0.2520d. 1.05514. A 2.5-m' rigid tank initially contains air whose density is 1.18 kg/m³. The tank is connected toa high-pressure supply line through a valve. The valve is opened, and air is allowed to enter thetank until the density in the tank rises to 5.30 kg/m³. Determine the mass of air that has entered thetank in Ib.a. 25.4678lbb. 25.3399|bc. 26.4865lbd. 22.7115lb15. Three (3) adjacent bodies whose initial temperatures are 150°F, 350ºF and 60°F have specificheats of 2lb-ft/lb-°R, 4lb-ft/b-°R and 3.21lb-ft/lb-°R respectively. They are all placed inside a closedadiabatic (perfectly insulated) container until the equilibrium condition. If the first two (2) objectshave a masses of 5lb, 3lb respectively, determine the mass of the 3rd body if the equilibriumtemperature is attained at 87.5°Fа. 39.22081bb. 41.4787lbc. 42.8977lbd. 39.7227lb

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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3. A girl weighing 604 N hangs suspended on the end of a rope 9.0 m. long. If a friend pushes her laterally to one side until the rope makes an angle of 38 ° with the vertical, what lateral force is required at this point? What is the tension of the rope ? if local g = 979 cm/s²? What is her mass in kg and in lbm . Ans. 471.897 N: 766.487 N: 61.696 Kg 136.04 lbm.
Units and dimensions (Activity 1) 1. A person weighs 150N on the moon, where g=1.64m/ s2. Determine (a) the mass of the person and (b) the weight of the person on earth. 2. Convert the following: (a) 40,000 N-cm to kN-m (b) 6 m/s to mm/hr (c) 1 bar (105 Pa) to kPa and (d) 500 g/mm to kg/m. 3. The mass moment of inertia of a certain body is | = 1035285.8 g-mm2. Express I in kg-m2 up to 4 significant digits.
A mobile phone has a small motor with an eccentric mass used for vibrator mode. The location of the eccentric mass on motor with respect to center of gravity (CG) of the mobile and the rest of the dimension of the mobile phone are shown. The mobile is kept on a flat horizontal surface. CG Motor 10 cm Eccentric Q Mass /- 3 cm 6 cm Given in addition that the eccentric mass 2 %3D grams, eccentricity = 2.19 mm, mass of the mobile = 90 grams, g= 9.81 m/s2. Uniform %3D %3D speed of the motor in RPM for which the mobile will get just lifted off the ground at the end Q is approximately
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The acceleration due to gravity at sea level is gR81 m/sland is decreased 000S ft/s per 1000 ft of elevation. Find the height (miles) above sea level for which the weight of a 75 kgi decreased by 10 101.3 miles O 326.85 miles O 203.14 miles O 110.3 miles Neit
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QUESTION 3 A 7.62 mm caliber bullet travel in two different medium of gas of helium and nitrogen at constant speed of 1,548 miles per hour. The properties of the gas are given in Table 1. Cp (kJ/kg.K) Cv (kJ/kg.K) Temperature (K) Pressure (kPa) Table 1 Helium 5.192 3.115 300 unknown Nitrogen 1.039 0.746 300 unknown a) Calculate the speed of sound in both medium (helium and nitrogen). b) Determine the March number of the bullet for both medium. c) Do you think that the shockwave occurs in this bullet travel for both medium of gas? Sketch your ideas of this bullet travel and the shock wave (if available).
The gravity acceleration at a certain level is 9.78 m/s². This accelartion varies by 8.28 x 104 m/s² for every 100m ascent. a. Find the weight of an object above this level where the acceleration due to gravity is 9.70 m/s². b. Find the weight of an object relative to this point whose mass is 80 kg at a height of 10, 000 meters 1. c. Find the height above this point if the weight of a man decreased by 5%
please answer it in 1hr. PLEASE SHOW SOLUTION STEP BY STEP WITH UNITS. SUBJECT: THERMODYNAMICS, TOPIC: PROCESSES OF GASES
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A hydraulic fluid has a specific weight of 56.53 lb/ft3 What is its density p? (Note: the specific weight of water is Ywater - 62.4 lb/ft, and the acceleration of gravity g -32.2 ft/s²) O0.57 slugs/ft O 0.906 slugs/ft³ None of these O1.201 slugs/ft³ 1.756 slugs/ft Question 2 16 AGH P Sos

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