A child's balloon is a sphere 0.9 ft in diameter. The balloon is filled with helium (p = 0.014 lbm/ft³). The balloon material weighs 0.007 lbf/ft² of surface area. If the child releases the balloon, how high will it rise in the standard atmosphere? (Neglect expansion of the balloon as it rises.) Z= i ft

A child's balloon is a sphere 0.9 ft in diameter. The balloon is filled with helium (p = 0.014 lbm/ft³). The balloon material weighs 0.007 lbf/ft² of surface area. If the child releases the balloon, how high will it rise in the standard atmosphere? (Neglect expansion of the balloon as it rises.) Z= i ft

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

On a cool day at 21 °C on the beach Isabella wants to propose to her boyfriend, she has a sign that reads, "Will you marry me?". The sign weighs 21.2 lbs. To carry the sign into the air Isabella fills 2 balloons with Helium gas. How many liters of helium must Isabella fill each balloon with? (453.6 g = 1 lb) The buoyancy of He is the difference between the density of helium and the density of air (whose weighted average molar mass can be calculated from the gasses that make it up and their % (N₂ = 78%, O₂ = 21%, Ar = 1%). HINT: calculate the mass in grams Helium can lift. PS. Isabella realized that her non-science major boyfriend was not smart enough for her and dumped him!
3. A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? 4. A reservoir of glycerin has a mass of 1200 kg and a volume of 0.952 m³. Find the glycerin's weight (W), mass density (O), specific weight (8),and specific gravity (s.g.)
An aquarium 7ft long, 3ft wide, and 5ft deep is full of water. The gravitational acceleration is g = 32ft/s². The density of water is p = 1.95slug/ft³. Answer the following questions. 1. Find the hydrostatic pressure on the bottom of the aquarium. Answer (in pounds per sq. foot): 2. Find the hydrostatic force on the bottom of the aquarium. Answer (in pounds): 3. Find the hydrostatic force on one end of the aquarium. Answer (in pounds): FI
The figure shows a 50.-kg frictionless cylindrical piston that floats on 20 mol of compressed air at 45.°C. How far does the piston move if the temperature is increased to 600 °F? (This is an Isobaric process and the piston is at sea level under an atmospheric pressure of 101.3 kPa). The values given in the figure are: 50. Kg, 30.°C, and 10. cm.
An airship of 100m3 in size is launched from sea level and it gradually attains height until it reaches the desired altitude. A manometer measuring the gage pressure of the inside filled Helium gas show a reading of 1.2 bar at the altitude of A meters from the ground. Manometer shows reading of 2 bar when it reaches to a height of B meters. Assume; Density of air at point A = 1.00 kg/m3 and at Point B= A = 0.80 kg/m3. You can also assume average density = 0.9 kg/m3 where required. Consider temperature inside the balloon = 10°C and negligible change in temperature during the process. (a) How much payload mass can it carry if the mass of airship itself is 5Kg? Do you expect any change in lifting capacity while moving from point A to point B? (b) Calculate the mass of helium to be expelled out to maintain the constant pressure of 2 bar at point B.
An airship of 100m3 in size is launched from sea level and it gradually attains height until it reaches the desired altitude. A manometer measuring the gage pressure of the inside filled Helium gas show a reading of 1.2 bar at the altitude of A meters from the ground. Manometer shows reading of 2 bar when it reaches to a height of B meters. Assume; Density of air at point A = 1.00 kg/m3 and at Point B= A = 0.80 kg/m3. You can also assume average density = 0.9 kg/m3 where required. Consider temperature inside the balloon = 10°C and negligible change in temperature during the process. (a) Calculate external atmospheric pressure difference between Point A and B (b) Neglecting the effect of altitude on local gravitational acceleration, determine the height attained from A to B.
An iceberg weighing 57 lb/ft3 floats in the ocean (64 lb/ft3) with a volume of 21,000 ft above the surface. What is the total volume of the iceberg?
H.W: A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area (2.50x10-5) m2, and the needle has a cross-sectional area (1.00x10 8 ) m². In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force F of magnitude 2.00 N acts on the plunger, making medicine squirt horizontally from the needle. Determine the speed of the medicine as it leaves the needles tip.
The sketch shows an oil manometer that is connected between two pipes which transport water. The density of water can be taken as 998kg/m3, the specific gravity of glycerol is 0.76 and atmospheric pressure is 100 kPa. The respective dimensions (as shown on the sketch) are given below: h1 = 0.17 m h2 = 350 mm h3 =15cm. If the pressure gauge gives a reading of 19 kPa, what is the absolute pressure in pipe B?
How many liters of mercury (sg = 13.54) would weigh the same as 15 gal of engine oil, which has a specific weight of 60.5 lb/ft3
A manometer using oil (density 0.900 g/cm3) as a fluid is connected to an air tank. Suddenly the pressure in the tank increases by 7.61 mmHg. Density of mercury is 13.6 g/cm3. By how much does the fluid level rise in the side of the manometer that is open to the atmosphere? ? cm
A graduated cylinder has a mass of 100 gm when empty. When 30 ml of water is added, the graduated cylinder has a mass of 130 gm. If a stone is added to the graduated cylinder, the water level rises to 65 ml. and the total mass is now 189 gm. What is the density of the stone? * 3.11 gm/ml O 2.71 gm/ml 1.68 gm/ml O 2.24 gm/ml How much force does the atmosphere exert on one side of a vertical wall 4.0 m high and 10.0 m long ? * 4.05 X 10 °N 2.53 X 10° N O 1.93 X 10 *N 3.18 X 10 °N Find the absolute pressure at a depth of 8 ft. on a bottom of a swimming pool filled with fresh water. * 16.13 psi O 15.4 psi 17.2 psi O 18.14 psi