A hot air balloon plus cargo has a mass of 291 kg and a volume of 809 m3. The balloon is floating at a constant height of 6.25 m above the ground. The density of the outside air may be assumed to be 1.29 kg/m3. What is the density of the hot air in the balloon?
can someone help me with this...
so you have a girl in the elevator with a balloon. the elevator begins to descend in free-fall, and the girl releases the balloon in surprise. my book says that the balloon will stay at the same level relative to the girl as before, which brings me to my question: do buoyancy forces not work...
hey what does everyone know/estimate one of those three man giant elastic water balloon launchers has as its k constant in hooke's equation F = -kx
im trying to figure out a max range for one of those for a given strech length x and a given mass m.
i did 1/2 m v^2 = 1/2 k x^2 -> v =...
a couple nights ago whilst my presleep thoughts wondered about, i came across a balloon filled with helium. in this thought, i saw the not uncommon sight of it floating up. then i wondered why it went up and not down or some arbitrary direction. i know helium is lighter than our oxygenic...
can someone help me with this problem?
A hot air balloon has just lifted off and is rising at the constant rate of 2.4 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 11.2 m/s. If...
A hot-air balloonist, rising vertically with a constant velocity of magnitude v=5.00m/s , releases a sandbag at an instant when the balloon is a height h=40.0m above the ground . After it is released, the sandbag is in free fall.
1.) Compute the position of the sandbag at a time 0.165s after...
A 30kg balloon is filled with 100m^3 of hydrogen. How much force is needed to hold it down??
I'm not even sure which formula to use with this one. :confused:
I'm just wondering what a curve would look like if the x-axis is the temperature inside a hot air balloon and the y-axis is the diameter (in feet) of the balloon. There's a relation in how many pounds a hot air balloon can lift based on this curve and I'm looking to see what a good balance would...
If the volume of a balloon is V=416m^3 and the surrounding air is T=13.8 C. The temperature of the air in the balloon is 213 C. What is the max amount of mass, in addition to the mass of the hot air, the balloon can lift? Density of air is of air outside balloon is 1.22 Kg/m^3.
I know I...
Hey guy,
I didnt think i would ever have to deal with gas laws after i got out of AP chem, but it has showed up again in physics. Tell me what to do.
Suppose the volume of a balloon decreases so that the temperature of the balloon decreases from 280K to 240K and its pressure drops from...
I can't seem to figure this simple helium balloon problem out? I would really appreciate some help? Thanks!
Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 500 kg. The density of air is 1.29 kg/cubic meter and helium has a density of .178 kg/cubic meter...
We have a netural balloon and the question wants to know what it's charge is after 19000 electrons have been removed. Wouldn't the charge remain the same since the object wasn't charged in the first place?
You have a neutral balloon
What is its charge after 13000 electrons have been removed from it?
I know you have to use, q=ne but I don't know what to plug in for n
A 507kg weather balloon is designed to lift a 4220kg package. What volume should the balloon have after being filled with helium at STP in order that the total load can be lifted.
I have no idea how to start this problem...
If you have a string strung horizontally between two chairs, how can you get a balloon from one end of the string to the other, and then back again? You can use items such as tape, paperclips, straws, more balloons, ect. I have tried this and have found if you put the string through a straw, and...
Hi,
I would really appreciate help in solving the following problem.
A helium-filled balloon is tied to a 2.00 m long, 0.050 kg uniform
string. The balloon is spherical with a radius of 0.400 m. When
released, the balloon lifts a length h of string and then remains in...
You launch a group of helium filled spherical weather balloons which have been painted with a thin layer of signal reflecting paint. the first balloon requires 2.75 liters of paint the second balloon you launch is bigger it's diameter is bigger by a factor of 2.75 how much paint will be needed...