Balloon Definition and 468 Threads

My friend and I had an idea to put camera on the weather balloon and we wanted to have like a live picture from camera. But because we don't know so much about electronics we don't know how to do it. Fe figured out that we can do it via radio waves, maybe there is some more efficient way. That...

1. Four balloons with the same size are dropped off from the same height on boards that have different numbers of nails. In which of the cases in the balloon will be the lowest pressure? 2. p=F/S 3. I am not sure about the correct answer, but I am saying my opinion about the right answer. By...

Homework Statement If it takes 17 seconds to blow up a balloon to 8 cm in diameter, how much longer will it take to inflate the balloon to 24 cm in diameter? Assume that the pressure that the balloon exerts on the air inside is proportional to the surface area of the balloon, that you blow...

I have updated my web page on the balloon analogy by going carefully through all of the comments in the original thread and I THINK I have managed to eliminate all of the problems that the first one had by incorporating suggested changes (thanks everyone), although NOT all of the suggested...

I'm sure there must be umteen dozen sites on the internet that explain the balloon analogy, but many of them must do a really bad job, since we see questions here all the time that show how badly misunderstood it is. I have tired of responding in detail to these misconceptions, so have...

Hi, A party balloon is glued onto an straw. The user inflates the balloon by blowing through the straw. However, the balloon is constrained due the presence of a rigid wall just beyond it (causing the balloon to expand upwards or backwards towards the person inflating it!). I would like to know...

Is there a way to reclaim the Helium that I put into a weather balloon? Meaning, I empty out a cylinder of Helium into a weather balloon, and for some reason I want to get it back into the tank (bad weather, missed launch time, MacGyver is on, etc.) and can't launch my balloon. Is there a way...

The total mass of helium in a balloon is 199 kg. What is the volume of the balloon? Enter only the numeric portion of the answer, not the units. That is the problem. I am having trouble locating a simple forumla for this. All I can seem to find involve having the radius of the balloon which...

Could a balloon be filled with vacuum - in a vacuum? And if a balloon was filled with any other gas and put in a vacuum, it would just expand until it popped, no doubt?

Question: A baloon rubbed aginst denim gains a charge of -8microC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5.0 cm? (Assume that the charges are located at a point.) Equations used: F electric = K q1 X q 2 / r^2 Steps...

Homework Statement We blew up a balloon, attached a data logger inside the balloon. We then popped it and checked if the temperature increased or decreased. Most of the time, the temperature increased (from around 29 degrees Celsius to 29.2 degrees Celsius). Why is this so? Homework...

Hi, Is it possible to control the attitude of helium balloons without cutting the balloons or dropping the weight? (e.g. using a remote control to control "something" to adjust the attitude) Thanks,

Problem : A conducting metal balloon of Radius ' R ', essentially of negligible mass is charged with charge ' Q '. It has to carry a payload of mass ' M '. Find how the charge ' Q ' depends on the mass M and the Intrinsic Energy ' W ' of the balloon. Attempt: We have P_{atm} =...

Homework Statement Estimate the average temperature inside a hot-air balloon. Assume that the total mass of the unfilled balloon and payload, which we will all call mp is 500kg. Homework Equations Archimedes principle, ideal gas law ... The Attempt at a Solution Okay I'm not really...

Does anyone know the highest altitude the biggest industrial grade weather balloon can go?

Homework Statement The envelope and basket of a hot-air balloon have combined mass of 331 kg. The spherical envelope of the balloon has a radius of 10 m when fully inflated. What is the maximum mass of the passengers the balloon can carry when the temperature of the gas is 108 o C? Use...

Homework Statement A hot-air balloon consists of a basket, one passenger, and some cargo. Let the total mass be M. Even though there is an upward lift force on the balloon, the balloon is initially accelerating downward at a rate of g/3. The passenger notices that he is heading straight for...

Hi everyone, I am doing a lab report about free fall, but I have to find the terminal velocity for the balloon, but I don't know if I can use the formula velocity = Distance / Time because I have 10 measures from free fall ( 0.2 m - 2 m) , and I have the time that it took to hit the ground...

When you heat the gases inside a hot air balloon it makes more sense (for myself at least) to say that it rises due to the velocity and kinetic energy of the molecules in their relation to the gases outside. Outside the balloon the molecules are obviously cooler, more dense, and moving slower...

Homework Statement A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg1m-3 and the density of helium in the balloon is 0.18 kg1m-3. The radius of the balloon (when filled) is R = 5 m. The total mass of the empty balloon and basket is mb = 123 kg and the...

Homework Statement g) A spherical balloon of radius R = 1.95 m is made from a material of mass M = 4.56 kg and is filled with helium gas at temperature T = 289 K. Assume the thickness of the balloon is negligible compared to the radius of the balloon, and the balloon just floats on air...

Homework Statement The total weight o a gas filled balloon is 1500N.THE BALLOON RAISES AT CONSTANT SPEED OF 10m/s.Calculate the resultant force acting on the balloon? Homework Equations The Attempt at a Solution

This isn't homework but nobody is going to believe that so here it is: Homework Statement at t=1 (or any nonzero value of t) an ant starts moving across a balloon at velocity v=c=1 (c is the speed of light) the radius of the balloon as a function of time is given by r(t)=nct (n is a...

Hello there all, I'm a bit of a noob when it comes to a couple of these subjects but i was wondering if there is a particle of some sort that could be energized with an electrical charge and when this electrical charge passes through these particles it could make them act like hot air or helium...

This is the equation I'm talking about: PV = nRT So say I had a bit of Ideal Gas in a completely insulated elastic balloon, and I raised a temperature just a little bit. PV = nR(2T) Because this is an elastic balloon, would the volume also double? P(2V) = nR(2T) But what if the...

Hi, I was watching a hot air balloon show, and one of the demonstrations was someone dropping a ball out of a rising hot air balloon. If a hot air balloon is rising at let's say 19.6m/s, and you drop a ball directly down, will the ball continue to rise for two seconds because it has an...

Homework Statement the volume v=(4/3)(pie symbol 3.14..)r of a spherical balloon changes with the radius a)at what rate does the volume change with respect to radius when r= 2ft? b) by approximately how much does the volume increase when the radius changes from 2 to 2.2ft? Homework...

Hydrogen balloon naturally moves from low altitude to high altitude in Earth's atmosphere. Any object moves from higher to lower potential. So can we call low altitude high potential region?

Homework Statement A hot air balloon has just lifted off and is rising at the constant rate of 1.6 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. A friend picks it up and tosses it straight upward with an initial speed of 10.8 m/s. If the passenger is 2.5 m...

would a baloon or a barrel 'filled' with vacuum act as a hellium balloon and float in air? of curse that would require hard shell balloon... density of air at sea level is 1.22521 kg/m3. so if we could make a vacuum chamber one m3 big that would weigh 1.22 kg it would float right...

Homework Statement A hot air balloon is traveling vertically upward at a constant speed of 3.4 m/s. When it is 11 m above the ground, a package is released from the balloon. After it is released, for how long is the package in the air? The acceleration of gravity is 9.8 m/s^2. Answer in units...

Howdy, I am looking to find the rate of ascent for a weather balloon filled with helium. My assumptions as of now are total payload weight=10lbs, total balloon weight=2lbs, total balloon volume(at launch)=150ft^3, balloon diameter(at launch)=6ft. Also, how does the rate of ascent change with...

Homework Statement A hot air ballonist rising verticlly at a constant velocity "vb", releases a sandbag at the instant the sandbag is "h" meters above the ground. Given [vb,h] Determine: a. The time for the sandbag to hit the ground b. The speed of the sandbag just before hitting the...

Say you had a small platform lifted by a high altitude balloon capable of reaching 30 miles above the earth. And on the platfrom you had a small model rocket. If you launched this small rocket from 30 miles above the earth, could it reach the Kármán line? How powerful would the rocket have to be?

Question : A balloon tied to a thread whose other end is fixed to the bottom of a beaker is held such that the string is horizontal. The path traced by the balloon if it is released is ? Answer : The path is along the arc of a circle Please explain why the path will be along the arc of a...

I feel like this should be a fairly easy problem to solve in ANSYS but can't work it out. My actual problem is a bit more complex that what I've written below, but the solution method should be the same. A hollow cylinder is pressurised from the inside, the cylinder inflates. What is the...

If you released a helium balloon and if it never popped how high would it rise?

Homework Statement A man wants to go on a hot air balloon trip, and wants to build a balloon with a capacity of 10,000 m^3. The envelope and the balloon have a combined mass of 250 kg. His luggage would be 800 kg. Assume that the ambient air is at a temperature of 20 degrees Celsius. What...

(b]1. Homework Statement [/b] A spherical weather balloon has a radius of 1m when it is 1500m high. You observe that the radius increases at a rate of 2cm/min as it continues to rise. At what rate is the surface area increasing when the radius is 4m? Homework Equations I thought...

I am planning to do a high altitude balloon launch and I was wondering if anyone on this forum could help me figure out a few things. The payload+the balloon+the parachute= weigh around 2 pounds. I am looking to get 3 pounds of free lift (each pound of free lift equals 300 feet per minute...

Homework Statement A hot air balloon of mass M has two forces acting on it. An upward lift force and its weight due to gravity. The balloon is initially accelerating at a rate of -g/3. A)Find the upward lift force in terms of the initial weight Mg. B) What fraction of the total weight...

Are ballons mostly made of latex? I suppose the Young's modulus of balloon may be similar to that of latex condom. Thanks a lot.

What would be the cheapest option to measure the altitude of a near space balloon? I know GPS can't be used because it is restricted to work below a certain point.

I am thinking about launching a near space balloon. I'm going to send up a microcontroller with a pressure sensor that outputs audible beeps according to the height data from the pressure sensor. The problem is I don't have a way to transmit this audio data back down to earth. What is the...

Hey all, I have a potentially stupid question based on the following problem: "A boy on a small hill aims his water-balloon slingshot horizontally, straight at a second boy hanging from a tree branch a distance d away, Fig. 3-26. At the instant the water balloon is released, the second boy...

For a water balloon launch project, our students need to calculate the distance that the balloon will travel given the following information: K- the spring constant of the launcher the mass of the water balloon the angle of launch the distance that the launcher is pulled back. Can...

Hi, I'm having quite a time figuring out this problem. I have a weather balloon (well, a choice of several) and a payload of about 2kg. Most people release balloons like this such that they keep climbing until they pop, however I'd like to calculate how much to fill the balloon such that it...

Homework Statement A helium filled balloon is tied to a 2 m long uniform string of mass 0.05 kg.The balloon is spherical with a radius of 0.4 m. When released it lifts a length h of the string off of the ground. Find the length h given that the balloon has a mass of 0.25 kg. Homework...

If you released a balloon filled with helium, how high would it go if it never burst from the pressure change?

I am working on a space balloon project and I wanted to send video, or pictures, back to Earth via walki talki. I wanted to know if this would work; I connect a composite video cable from a camera to the wires of one of the walki talki's microphone wires. Then on the other end take the wires...