Question

We consider a hot-air balloon of mass 262 kg (basket and envelope). The spherical envelope of...

We consider a hot-air balloon of mass 262 kg (basket and envelope). The spherical envelope of the balloon has a diameter of 17 m when fully inflated. To what temperature (in °C) must the enclosed air be heated for the balloon to carry five standard men? Assume the surrounding air is at 20°C and is treated as an ideal gas. Use 29 g/mol for the molar mass of air. (Assume the mass of each standard man is 70 kg.)

PLZZ NEED RIGHT ANSWER I POSTED THIS QUESTION 4 TIMES ALREADY

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The envelope and basket of a hot-air balloon have a combined weight of 2.36 kN, and...
The envelope and basket of a hot-air balloon have a combined weight of 2.36 kN, and the envelope has a capacity (volume) of 2.29 x 103 m3. When it is fully inflated, what should be the temperature of the enclosed air to give the balloon a lifting capacity (force) of 2.64 kN (in addition to the balloon's weight)? Assume that the surrounding air, at 20.0°C, has a weight per unit volume of 11.9 N/m3 and a molecular mass of 0.0280...
1) A hot air balloon consists of a very large bag filled with heated air at...
1) A hot air balloon consists of a very large bag filled with heated air at 120.0 °C produced from a propane burner. It has a basket hanging under it in which several people can ride. The average hot air balloon has a volume of 2.80 × 103 m3 when fully inflated. a) Determine the work (in kJ) needed to inflate the balloon under an external air pressure of 1.00 atm. b) The specific heat of the air found in...
Challenge problem. (extra credit) Consider a hot-air balloon. The deflated balloon, gondola, and two passengers have...
Challenge problem. (extra credit) Consider a hot-air balloon. The deflated balloon, gondola, and two passengers have a combined mass of 315 kg. When inflated, the balloon contains 912 m3 of hot air. Find the temperature (?C) of the hot air required to lift the balloon off the ground. The air outside the balloon has a temperature of 20.2?C and a pressure of 0.916 × 10^5 Pa. The pressure of the hot air inside the balloon is the same as the...
A spherical balloon is made from a material whose mass is 2.60 kg. The thickness of...
A spherical balloon is made from a material whose mass is 2.60 kg. The thickness of the material is negligible compared to the 1.30 m radius of the balloon. The balloon is filled with helium (He) at a temperature of 280 K and just floats in air, neither rising nor falling. The density of the surrounding air is 1.19 kg/m³ and the molar mass of helium is 4.0026×10-3 kg/mol. Find the absolute pressure of the helium gas.
A helium balloon ride lifts up passengers in a basket. Assume the density of air is...
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. The radius of the balloon (when filled) is R = 5 m. The total mass of the empty balloon and basket is mb = 124 kg and the total volume is Vb = 0.06 m3. Assume the average person that gets into the balloon has a mass mp = 70 kg...
2. A spherical balloon is made from a material whose mass is 3.10 kg. The thickness...
2. A spherical balloon is made from a material whose mass is 3.10 kg. The thickness of the material is negligible compared to the 1.55 m radius of the balloon. The balloon is filled with helium (He) at a temperature of 315 K and just floats in air, neither rising nor falling. The density of the surrounding air is 1.19 kg/m³ and the molar mass of helium is 4.0026×10-3 kg/mol. Find the absolute pressure of the helium gas.
A helium balloon ride lifts up passengers in a basket. Assume the density of air is...
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. 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 total volume is Vb = 0.058 m3. Assume the average person that gets into the balloon has a mass mp = 70 kg...
A helium balloon ride lifts up passengers in a basket. Assume the density of air is...
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. The radius of the balloon (when filled) is R = 4.6 m. The total mass of the empty balloon and basket is mb = 126 kg and the total volume is Vb = 0.056 m3. Assume the average person that gets into the balloon has a mass mp = 72 kg...
A hot air balloon has a mass of 250 kg and carries two passengers whose average...
A hot air balloon has a mass of 250 kg and carries two passengers whose average weight is 84 Kg. The balloon, which has a diameter of 12 m, rises through atmospheric air which is at 20oC. Find the total buoyant force on the balloon. Atmospheric pressure is 100 kPa with gas constant = 8.13 kJ/kmol.K and molar mass of the air is 28.97 g/mol
A spherical balloon of radius 2.09 m is made from a material of mass 3.07 kg.  A...
A spherical balloon of radius 2.09 m is made from a material of mass 3.07 kg.  A certain amount of helium gas, at temperature 32.5o C, is put in the balloon, it just floats on the air, neither rising nor falling. Assume: - the thickness of the balloon is negligible compared to the radius of the balloon, and can be ignored. - the balloon material displaces a negligible amount of air, and therefore creates no negligible buoyancy. If the density of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Statistics Discussion: The accuracy of a forecasting technique is evaluated especially using the MSE (mean squared...
    asked 35 minutes ago
  • If the U.S. government manages to close a recessionary gap and achieve potential GDP with fiscal...
    asked 40 minutes ago
  • A block with mass 10kg is on a ramp angled at 20 degrees above the horizontal,...
    asked 40 minutes ago
  • I have a sample of 31 7thgrade girls who took an IQ test.  I calculated the sample...
    asked 47 minutes ago
  • A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size...
    asked 47 minutes ago
  • Brick column in the external corridor of a house, with section size of 440 mm X520...
    asked 48 minutes ago
  • 17.                             Mel has a(n) __________ lien on Ellen’s car after he replaced her clutch. The lien.
    asked 55 minutes ago
  • Jackson Company engaged in the following investment transactions during the current year. Feb 17,Purchased  430 shares of...
    asked 1 hour ago
  • When might discrimination in the workplace be justified? Might discrimination on the basis of gender or...
    asked 1 hour ago
  • The strength grade of materials used for brick masonry at a certain site is as follows:...
    asked 1 hour ago
  • Show (prove), from the original definition of the integers, that subtraction of integers is well defined....
    asked 1 hour ago
  • How is polarity of a "bond" different than polarity of a "molecule?" What makes a particular...
    asked 1 hour ago