19. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 27m abovethe water level. Determine the velocity of the stone as it hits the water.a. 23.0573m/sb. 24.7006m/sc. 24.3002m/sd. 25.0946m/s20. An ideal gas enclosed in a 1.77ft rigid tank initially at 70°C and 0.93kg/cm?. Find thetemperature in °C if the final pressure is 75 in Hg.a. 692.6699°Cb. 682.2848°Cc. 633.5381°Cd. 644.0674°C21. The barometer of a mountain hiker reads 14.7psi at the beginning of a hiking trip and 12.6psiat the end. Neglecting the effect of altitude on local gravitational acceleration, determine thevertical distance climbed. Assume an average air density of 1.18 kg/m³.a. 1112.5067mb. 1229.6126mc. 1250.4535md. 1190.9081m22. A bottle with a lid contains 0.0088kg of air at 65°C. If the volume of the air inside the bottle is0.007m and the diameter of the lid is 0.35m, what will be the force required to close the lid?a. 11.4714kNb. 11.0385kNc. 11.7382kNd. 11.7035kN23. Compute the probable density of a fluid inside a floating spherical balloon having a 2m diameterif the tension in the balloon's tie rope is observed to be 2kgf. Assume that the density of air is1.10kg/m³.a. 0.7225kg/m³b. 0.6225kg/m³c. 0.7025kg/m³d. 0.5848kg/m³24. An empty flask has a mass of 48.283g and 48.612g when filled with acetone vapor at 80°C and728mmHg. If the volume of the flask is 257.2mL, what is the molecular weight of the acetone?a. 43.7497kg/kmolb. 38.6978kg/kmolc. 42.4760kg/kmold. 43.8075kg/kmol25. Three (3) adjacent bodies whose initial temperatures are 150°F, 350ºF and 60ºF have specificheats of 2lb-ft/lb-°R, 4lb-ft/lb-ºR and 3.5lb-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 87.2°Fa. 39.22081bb. 41.4787lbc. 42.8977lbd. 39.7227lb

Dear student, According to the guidelines I am allowed to answer only three…

19. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 27m above the water level. Determine the velocity of the stone as it hits the water. a. 23.0573m/s b. 24.7006m/s c. 24.3002m/s d. 25.0946m/s 20. An ideal gas enclosed in a 1.77ft rigid tank initially at 70°C and 0.93kg/cm?. Find the temperature in °C if the final pressure is 75 in Hg. a. 692.6699°C b. 682.2848°C c. 633.5381ºC d. 644.0674°C 21. The barometer of a mountain hiker reads 14.7psi at the beginning of a hiking trip and 12.6psi at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance climbed. Assume an average air density of 1.18 kg/m³. a. 1112.5067m b. 1229.6126m c. 1250.4535m d. 1190.9081m

19. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 27m above the water level. Determine the velocity of the stone as it hits the water. a. 23.0573m/s b. 24.7006m/s c. 24.3002m/s d. 25.0946m/s 20. An ideal gas enclosed in a 1.77ft rigid tank initially at 70°C and 0.93kg/cm?. Find the temperature in °C if the final pressure is 75 in Hg. a. 692.6699°C b. 682.2848°C c. 633.5381ºC d. 644.0674°C 21. The barometer of a mountain hiker reads 14.7psi at the beginning of a hiking trip and 12.6psi at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance climbed. Assume an average air density of 1.18 kg/m³. a. 1112.5067m b. 1229.6126m c. 1250.4535m d. 1190.9081m

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

18. A classroom type room with 45students taking an exam in thermodynamics is expected to release a body heat of about 8kJ/hr per person. In order to compensate this heat dissipation, an air- conditioning unit is to be installed. If specific heat capacity and density of air is 1.0062kJ/kg-K and 1.21kg/m³, determine the volume of air flow required in examination room if the air is to be cooled down from 29°C to 20°C. a. 8.5177L¡/s b. 9.1262Lİ/s c. 9.2022Lİ/s d. 9.0501Lİ/s
Steam enters a turbine with an enthalpy of 3300 KJ/kg and leaves with an enthalpy of 2400 kJ/kg. The power output of the steam turbine is 6 MW Determine the work done per unit mass of the steam flowing through the turbine. choices:a.871.78 KJ/Kg b.881.87 KJ/Kg. c.788.82 KJ/kg. d.-871.78 KJ/Kg Calculate the mass flow rate of the steam. choices:a.8.60 kg/s. b.6.80 kg/s. c.8.61 kg/s d.7.68 kg/s need complete solution and proper symbols:)
Q 12 please
19. A spacecraft, traveling in deep space, fires thrusters to achieve a change in speed of 2.8 km/s. If the specific impulse of the thrusters is 300 s, what is the ratio of the initial spacecraft mass to the spacecraft mass after the thrusters have fired? a. 0.9 3000/2.8 2.6 C. 8.2 d. None of the above 20. The state vectors for an Earth-orbiting spacecraft at a given point in tim 5
5. Air enters a compressor at a rate of 0.5 Kgs¹ with a velocity of 6.4 ms', specific volume 0.85 m³Kg¹ and a pressure of 1 bar. It leaves the compressor at a pressure of 6.9 bar with a specific volume of 0.16 m³Kg¹ and a velocity of 4.7 ms¹. The internal energy of the air at exit is greater than that at entry by 85 KJKg'. The compressor is fitted with a cooling system which removes heat at a rate of 60 KJs¹. Calculate the power required to drive the compressor and the cross- sectional areas of the inlet and outlet pipes.
Air enters the cylinder of a 4-stroke gasoline engine at 33°C and 101.2 kPa. Engine clearance is 10.5% of the displacement. 2600 kJ/kg of heat is added during the constant volume heat addition process. Determine the following:a. Pressure & Specific Volume at each state.b. Work per unit mass (using volume and pressure).
THERMODYNAMICS In the process where the product of pressure and the volume is constant, a gas compression is carried out from an intial pressure of 200 kPa to a final pressure of 800 kPa. Consisting that the initial specific volume is 0.10 m3/kg, determine the work done per kilogram of gas. A. -32.5 kJ/kg B. -52.5 kJ/kg C. -41.51 kJ/kg D. -27.7 kJ/kg
Q 13 please
13
Energy flow is a one-directional process. True or False
(a).The name given to a machine that violates the laws of Thermodynamics is called a..... , while that that violated the second law of thermodynamic is called a ...... and that that violates the first law of thermodynamics is called a...... (b). A steam plant that could increase the thermal efficiency by using waste heat from the turbune is an example of........ , while that that could use the electical output from the turbine to generate steam to the system is an example of........ A toy called Drinking bird is an example of......... (PMM1/PMM2/PMM3/niether of the two) because the power source is......... (powered by water in the cup/ powered internally my the movement/ none of the option). (c). The entropy change of thermal energy reservoirs is the ratio of....... to....... and the unit in kilos is Fill in “= or > or < “
1. An engine rejects 200kW when running at a thermal efficiency of 22%. The calorific value of the fuel used is 42MJ/kg. Determine (i) the heat received by the engine; (ii) the power output in kW, and (iii) the mass of fuel used/h.