1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ira [324]
3 years ago
5

A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. for simplicity, co

nsider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket. the hot air inside the balloon has a density of ρhot air = 0.93 kg/m3, and the density of the cool air outside is ρcool air = 1.29 kg/m3. what is the acceleration of the rising balloon?
Physics
1 answer:
Elenna [48]3 years ago
4 0
Let V = the volume of the balloon
Force of gravity = V * ?hot * g downward
Buoyant force = V * ?cool * g upward
Net upward force F = V * ?cool * g - V * ?hot * g

F = V g (?cool - ?hot)

Mass of the balloon m = V ?hot

a = F/m = V g (?cool - ?hot)/(V ?hot)

a = g(?cool/?hot - 1)

a = 9.8(1.29/0.93 - 1)

a = 3.79 m/s^2

<span>Answer is 3.79 m/s^2</span>
You might be interested in
Please solve no.g <br>Anyone!???​
steposvetlana [31]

Answer:

The answer is already given... it's 31.25 cm

5 0
2 years ago
Which is the only mechanism that can introduce new alleles in a gene pool? genetic drift random mating mutation
Vikentia [17]
Mutation because they change the genes
8 0
3 years ago
Why quantity refractive index dooesn't have unit
ASHA 777 [7]
Refractive Index is a ratio of two similar physical quantity which is dimension less
refractive index = sin I / sin r

therefore it doesn't have a unit.
5 0
3 years ago
Read 2 more answers
What is the arrangement of the forms of electromagnetic radiation according to their wavelengths?
Svetradugi [14.3K]
Gamma rays then x rays then UVA rays then visible light then IR then radio waves (from highest to lowest frequency).
6 0
3 years ago
What will occur when the trough of Wave A overlaps the trough of Wave B?
Pavel [41]
C because the wave length was longer
6 0
3 years ago
Read 2 more answers
Other questions:
  • Describe two ways in which heat is transported in the biosphere
    6·1 answer
  • A child carries a 3N book at a constant velocity 4 meters across a horizontal floor. What is the net work done?
    9·1 answer
  • Why do we eat today
    10·2 answers
  • Compare the gravitational force on a 33 kg mass at the surface of the Earth (with ra-
    6·1 answer
  • Suppose a moving object has a kinetic energy of 100 J. What will the object's kinetic
    9·1 answer
  • Calculate the wavelength λ and the frequency f of the photons that have an energy of E photon = 2.32 × 10 − 19 J. Ephoton=2.32×1
    14·1 answer
  • The plane is flying with a velocity of 220m/s when it encounters a 45 m/s wind blowing same direction as the planes motion calul
    14·1 answer
  • Two objects were lifted by a machine. One object had a mass of 5000 kg, and was lifted at a speed of 2 m/sec. The other had a ma
    11·1 answer
  • At which position is the kinetic energy of a particle executing SHM greatest?
    13·1 answer
  • Latency refers to the 27 seconds of time it takes for someone to refocus on driving after they finish texting or talking on the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!