Balloon Definition and 468 Threads

[SOLVED] Gas Law Problem Homework Statement An expandable balloon contains 1400L of He at 0.950 atm pressure and 18 deg C. At an altitude of 22 miles (temp 2 deg C, and pressure 4 Torr. What will be the volume of the balloon? Homework Equations (P1V1)/T1 = (P2V2)/T2 1 atm = 760 Torr...

Homework Statement Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. A spherical helium balloon lifts a basket plus cargo of mass 269.0 kg. What must be the minimum diameter of the spherical balloon? Homework Equations p = F/A The...

Homework Statement A hot air balloon rises from the ground with a velocity of (2.0m/s)y. A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (5.0m/s)x. When opened, the bottle is 6 m above the ground. a) What is the initial velocity of the...

Homework Statement A balloon with an attached basket and a total mass of 1200 kg is hovering at an altitude of 500m. A bag containing 100kg of sand is emptied over the side of the basket. Find the upward acceleration of the balloon after the sand has been poured out. Homework Equations...

Homework Statement A Hot air balloon is traveling vertically up- ward at a constant speed of 2.6 m/s. When it is 19 m above the ground, a package is released from the balloon. The acceleration of gravity is 9.8 m/s^2. After it is released, for how long is the package in the air? Answer...

I have 2 problems that i can't do You apply a force of 0.35N up to lift a fork. The resulting acceleration is 0.15m/s2 up. Determine the mass of the fork (the answer is 35g-why?) A hot air balloon has acceleration of 1.10m/s2 down. The mass is 315kg. What is the upward force on the...

Homework Statement A hot-air balloon is descending at a rate of 2.0 m/s when a passenger drops a camera. If a camera is 45m above the ground when it is dropped, (a) how long does it take for the camera to reach the ground(b) what is the velocity just before it lands? Let upward be the...

Helium Balloon Question! Hey I have a buoyancy question here, anyone know how to solve it? A 15 gram rubber balloon is filled with 18 L of Helium (density 0.179kg/m^3) and tied with a string to a child's wrist. Find the tension in the cord. The answer is 0.050N but what is the solution? Im not...

As a helium balloon increases in altitude, the density of the air inside decreases. However, the density of the air surrounding it (The atmosphere) also decreases with altitude p=p0*exp(-z/z0), where z0 is the scale height of the atmosphere. So does this mean the lift force acting on the...

Homework Statement A helium balloon has volume V0 and temperature T0 at sea level where the pressure is P0 and the air density is \rho_0. The balloon is allowed to float up in the air to altitude y where the temperature is T. (a) Show that the volume occupied by the balloon is then V =...

Can somebody give me a link to a place where they explain crumple zones and know how to simulate that with poster board and balloons? And how would i figure out the perfect amount of air to put into a balloon to withstand as much compression as possible?

Homework Statement A balloon is flying directly upward with a constant velocity of 6.0 m/s. When it reaches 145 m above the ground, a package is thrown horizontally at 4.5 m/s with respect to the balloon. How many seconds after being launched will the package hit the ground? Homework...

Homework Statement balloons are required to lift 20 metric tons. the pressure of helium is 101.325kpa. temp=21.1degcelsius. what should be the diameter of the balloon if it was spherical in shape in order to lift the weight? Homework Equations bouyant force?? The Attempt at...

Hi All, I'm building a balloon car and I'm in need of ways to increase the speed of the car. Here's a description: Attach a balloon to a car. Rave the balloon powered car over 3 meters. The car must move on its wheels and the sole source of propulsion must be provided by the balloon...

Homework Statement An empty rubber balloon has a mass of .0111 kg. The balloon is filled with helium at 0degrees C, 1atm pressure, and a density of .179 kg/m^3. The filled balloon has a radius of .154 m. What is the magnitude of the buoyant force acting on the balloon? Answer in units of N...

Homework Statement A balloon 20 m in diameter is filled with helium at a gauge pressure of 2.0 atm. A man is standing in a basket suspended from the bottom of the balloon. A restraining cable attached to the basket keeps the balloon from rising. The balloon (not including the gas it...

I can't figure out how to get started on this problem. Maybe you guys can help. A spherical balloon carries a total cahrge Q(1C) uniformly distributed over the surface. At t=0, r=r(sub 0), at t=30s, r=2r(sub 0). Find what is the electron field at 90 s at a distance of .5m from the balloon...

Homework Statement Take 2 rubber balloons A and B of equal mass. Balloon A is filled with air and balloon B is left empty and the two are weighed in a pan balance. What will you observe and why? 2. The attempt at a solution The balloon with air will appear lighter if experiment is...

Homework Statement A balloon is rising vertically at a constant speed of 21 m/s. A stone is dropped from the balloon. The stone strikes the ground 10 seconds later. Assuming that air resistance is negligible and that acceleration on Earth due to gravity is 9.8 m/s2, from what height is the...

Ideal Gas Law Problem :) Homework Statement A balloon is filled with helium at a pressure of 1.0 x 10^5 Pa. The balloon is at a temperature of 23°C and has a radius of 0.13 m. (a) How many helium atoms are contained in the balloon? (b) Suppose we increase the number of helium atoms in...

Homework Statement A balloon is filled with helium at an atomospheric pressure. The skin of the balloon has a mass of 3.1 kg and the volume of the balloon is 18 m^3. Homework Equations What is the greatest weight of the balloon? The Attempt at a Solution In order to determine the...

Homework Statement A helium-filled balloon at atmospheric pressure is tied to a 3.1 m long, 0.100 kg string. The balloon is spherical with a radius of 0.40 m. When released, it lifts a length (h) of the string and then remains in equilibrium as in Figure P9.78. Determine the value of h. When...

This is one of many postings from me this week unfortunately I'm just not getting the correct answers...anyway here I go : A toy balloon is inflated with helium at a constant pressure that is 4.2e5 Pa in excess of atmospheric pressure. If the balloon inflates from a volume of 1.4e-4m3 to...

A spherical helium balloon is 2.5 m in diameter and has a total mass of 6.7 kg. When released into the U. S. Standard Atmosphere, at what altitude will it settle? My first thought was that diagram has the weight of the balloon acting downward, buoyant force upwards. -weight + Fb = 0...

buoyant forces I was having trouble with this problem. please let me know how to approach this. thanks. An empty rubber balloon has a mass of 0.0135 kg. The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon is spherical with a radius of 0.400 m. If the...

Helium Balloon Question...Help! A 600 kg weather balloon is designed to lift a 4000 kg package. What volume should the balloon have after being inflated with helium at standard temperature and pressure in order that the total load can be lifted? density of helium .179 and air is 1.29. I have...

I got stuck on the following problem, which is very important for my exam preparations - would anyone mind giving me a hint? A balloon of Volume V(0) is tethered to the ground using a light cable. It is filled with helium gas of density rho (He). At ground level the pressure and density in...

And some film technicians running around with cameras and sound booms. The streets surrounding were I am are blocked off. It's past midnight; these hollywood people are mentally ill. But we already knew that. :rolleyes:

Sorry I am poor at using English to describe things. I hope you will patiently read my questions and answer them. 1. I saw some helium balloons today. We all know that if you do not hold the helium balloons, they will rise up to the sky. But today I saw a bundle of helium balloons (their...

Here are a couple problems I would like to check and a couple I'm not sure how to do: 1.3)A 650kg weather balloon is designed to lift a 4600kg package. What volume should the balloon have after being inflated with helium at 0C and 1 atm pressure to lift the total load? Density of helium =...

Hi. I have been trying to do this question for about an hour now... A 0.12 kg balloon is filled with helium (density-0.179). If the balloon is a sphere with a radius of 5.2m what is the maximum weight it can lift. I tried using the P=M/V then Fb=pgV...No luck...Help..

I have tried to solve these problems all day, but to no avail. I am very confused! 8. The instruments attached to a weather balloon have a mass of 5.0 kg. The balloon is released and exerts an upward force of 95N on the instruments. A. What is the acceleration of the balloon and...

A hot air balloon is ascending straight up at a constant speed of 7.0 m/s. When the balloon is 12.0m above the ground, a gun fires a pellet straight up from the ground level with an initial speed of 30.0 m/s. Along the paths of the balloon and the pellet, there are two places where each of them...

Our teacher just gave us a priject to complete and i cannot figure it out. first of all we have limited supplies. we can use 5 ballons, 6 straws, 10 paperclips, 5 rubberbands, a whole roll of masking tape, scissors and a guide wire that cannot be altered. Our goal is to get the a balloon to go...

For a lab I am working on, we are designing a high-altitude research balloon. I have some questions though. 1. How do I calculate the volume of a zero-pressure balloon? By taking my mass of the body over the density of the air at altitude, does this give me the volume of gas needed at...

A helium balloon has volume V0 and temperature T0 at sea level where the pressure is P0 and the air density is p. The balloon is allowed to float up in air to altitude y where the temperature is T1. a) Show that the colume occupised by the balloon is then V = V0(T1/T0)e^(+cy) where c =...

Not long ago I read an article here in PF about explosion of dry ice in a bottle and I just accidentally found one of the video... If you are interested, u might want to check it out: http://www.spikedhumor.com/Article.aspx?id=360 Another physics experiment performed on water balloon...

Hi - I know this must be a basic question, but I'm doing this physics problem and I can't get the exact answer! Here it is and my work along with it - can someone please tell me what I'm missing in my equations? The problem is taken from the James Walker physics book - Chapter 15. Number...

Is this a correct interpretation of Archimedes Principle for this application? A balloon is filled with helium (density = .02 kg/m^3) and has a volume of .009 m^3. What is the buoyant force exerted on the balloon in air (density = 1.3 km/m^3)? Fb = (1.3 km/m^3)x (.009 m^3) x (9.80 m)...

Hi. There is a hot air balloon with total mass M. There is an upward lift force of 2Mg/3 but the balloon is accelerating downward at a rate of g/3. The passenger needs to make the balloon lighter and starts throwing things of. What fraction of the total weight must he drop overboard so that the...

I'm learning about charge right now and I have no idea how to start this one.. any help is appreciated. A helium balloon has a charge of q = 5.5 x 10^-8. It rises vertically into the air. d = 600m. from the surface of the Earth to final position A. The electric field that normally exists in...

So I know you can make a "negative density" region between two plates due to the Casimir effect. I know there's probably not, but is there any theoretically possible way to create a region of such negative density that the total density of the plates and region would be less than vacuum? I had...

I wondered if you could float into space on a balloon. After a quick search on Google I found an answer that left me with more questions. This is what it said:"Could a helium balloon float all the way up into space? A helium filled balloon can float very high up into the atmosphere, however...

This is my gr. 11 physics problem that I can't get. I would be very grateful if someone could help me. :smile: A hot air balloon has a force of gravity of 3000N but has an upward force of 3800N due to the hot air. Person A is on the ground and pulling the balloon with a force of 540N [Left...

Hello all. I'm new to the forum, but I have a feeling I'll be hanging around a lot. I have a question for all of you. If you have a rock suspended by a helium balloon inside a sealed box (the balloon is not touching the top of the box), would the box weigh the same as it would if the rock...

Hi! Well this is the problem which is so much confusing because I am not sure what method to follow while solving it. Plz Help me! "A balloon drifts 2.5km north, 3.o Km east and 1.6 Km in elevation from its release point. find the magnitude of the displacement and the angle the...

the questioon is this: A balloon of radius 34.5 cm is sprayed with a metallic coating so that the surface is conducting. A charge of 1.05 × 10-08 C is placed on the surface. What is the potential on the balloon's surface? how i solved it: -apply the guass law, which gives me the Electrical...

hey guys i have an exam tomorrow so i guess a uick reply would help .. my mind is totaly blocked as to how to solve this question. hot air baloon experiences an acceleration of 1.10m/s total mass equals 315kg a) what is the upward (buoyant) force on the system b) the baloonist wishes to...

Hi, I have no idea of how to do the following problem and what formulas I should use. Please help! Thank you. A spherical balloon has a conductive coating and we propose to inflate the balloon to a diameter of 0.1 meters by connecting the surface to a high voltage source. Suppose that the...

let's say a rubber balloon is not streched (but almost) when its volume is 1L. what force (or pressure) does the balloon exert on a gas inside it when its volume is stretched by xL? I'm measuring this experimentally, but I'd like to know a theoretical way of calculating it.