In the book, Uncle Ned gets stuck in the air because he is wearing the title pants, whích are filled with helium, and the title character (the young scientist Ada Twist) has to help him get down (if you want to know how, you'll have to read the book). Let's explore whether this perilous invention is feasible. As you know from physics, Uncle Ned will float (in air) if the buoyant force pushing him upward is greater than his weight pulling him downward. Let's assume that Uncle Ned has a mass of 80 kg, and (since, as we said in problem I, humans are mostly made of water) he has the same density as water. a) What is Uncle Ned's weight? (Without the helium, but we can assume the helium won't add much additional weight.) b) What is the buoyant force on Uncle Ned when he is not wearing the helium pants? c) How much minimum volume of helium needs to be in Uncle Ned's pants for him to float? d) If you model Uncle Ned (and his holium

In the book, Uncle Ned gets stuck in the air because he is wearing the title pants, whích are filled with helium, and the title character (the young scientist Ada Twist) has to help him get down (if you want to know how, you'll have to read the book). Let's explore whether this perilous invention is feasible. As you know from physics, Uncle Ned will float (in air) if the buoyant force pushing him upward is greater than his weight pulling him downward. Let's assume that Uncle Ned has a mass of 80 kg, and (since, as we said in problem I, humans are mostly made of water) he has the same density as water. a) What is Uncle Ned's weight? (Without the helium, but we can assume the helium won't add much additional weight.) b) What is the buoyant force on Uncle Ned when he is not wearing the helium pants? c) How much minimum volume of helium needs to be in Uncle Ned's pants for him to float? d) If you model Uncle Ned (and his holium

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

After years of asking, you finally were allowed to go on a joy ride in your uncle’s 1956 Mercedes-Benz 300 SL. A notable feature of this vehicle is the gullwing door design that opens from a hinge at the top of the car. Unfortunately, you are having so much fun driving the car that you end up submerged in a fresh water lake. You sink to the bottom of the lake, which has a depth of 10 m. For the sake of simplicity, you can model the door as a 1 m × 1 m square plate, inclined at 45° relative to the floor of the lake. Neglect the weight of the door and friction in the hinge. How much force will be required to open the door, assuming you push from its geometric center?
A child takes a helium balloon on a plane from Denver (with an air pressure of 0.83 atm) on a cool day when the temperature is 20.0oC to Boston (at sea level, with an air pressure of 1.0 atm) where the temperature is 5.0oC. Assume that no gas escapes from the balloon during the flight. What is the volume of the balloon in Boston, relative to its size in Denver? Group of answer choices The volume in Boston is 0.79 times the volume in Denver. The volume in Boston is 0.20 times the volume in Denver. The volume in Boston is 0.87 times the volume in Denver The volume in Boston is 1.3 times the volume in Denver. The volume in Boston is the same as the volume in Denver.
C Mississippi Jane is at it again! The big bad evil one has trapped her on an accelerating conveyor belt with a rolling pipe - or so it seems. The pipe is actually not there and instead to be added in during post production for the actress' safety. It is up to you to calculate the proper physics of the pipe so that the CGI pipe may look as realistic as possible. If the pipe is meant to have a mass of 500 (kg) and a mean radius of 0.55 m, determine the pipe's angular acceleration if the conveyor belt has an acceleration of 1.9 Assume the pipe does not slip on the conveyor belt and neglect its thickness. m 82 α= 3.5 X rad 2 сс UBC Engineering
From rest a balloon begins to rise. the Balloon experiences a lift due to a buoyant force of 8000 N. 1. Total massof the balloon is 600kg. Find Acceleration. 2. The balloon rises a distance of 10m and loses a mass of 50 kg after a weight is thrown off. Find the acceleration of the balloon after this weight loss 3. Find the initial velocity of the mass in the vertical direction at the timeof the jump. 4. After falling 10 m, find the mass' final velocity as it comesinto contact with the ground. 5.What is the total time the mass takes to hit the ground? 6. Find the heightof the balloon when the mass hits the ground 7. The mass lands 3 m from the baloon, find the horizontal velocity required to land 3m from the balloon. 8. Since the balloon exeperiences equal forces when the mass is thrown off, what is the horizontal velocity the baloon experiences during this act and how far does the balloon travel when the mass comes into contact with the ground?
prob 1, write legibly
2.78 An automobile has just dropped into a river. The car door is approximately a rectangle, measures 36 in. wide and 40 in. high, and hinges on a vertical side. The water level inside the car is up to the midheight of the door, and the air inside the car is at atmospheric pressure. Calculate the force required to open the door if the force is applied 24 in. from the hinge line. See Fig. P2.78. (The driver did not have the presence of mind to open the window to escape.) 36" -24" V 40 ■FIGURE P2.78
The pilot of a Boeing 767 determines that a total of 22,300 kilograms of jet fuel is needed to fly from Montreal to Edmonton. A floatstick check finds that there is 11,549 litres of fuel already in the tanks. How much fuel, expressed in litres, must be added to the tanks? The density of jet fuel varies with temperature. For the prevailing conditions take the density of the jet fuel to be 0.803 kg/L or equivalently 1.77 lb/L.
Your professor at HTU asked you to explain Archimedes topic to your classmates at one of the classes as a homework. During the class, one of the students asked the following question. A ring weighs 83.327×104N in air and 80.33×10-4 N when submerged in water:
During lab, Table Group 9 accidentally launches their spring from the tabletop onto the light fixture shown in the diagram. The spring has a mass of 12 grams. The instructor gave clear instructions not to stretch the spring by more than 70 cm to protect it from damage. If this spring's stiffness is k= 15 N/m, did the group follow instructions or did they stretch the spring too far? 3.0 m 1.2 m
please answer all