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
nikitadnepr [17]
3 years ago
14

Identify the method of thermal energy transfer at work in hot air balloons. Explain how thermal energy is transferred in this sc

enario.
Physics
2 answers:
yan [13]3 years ago
8 0
Thermal energy in the form of fire is generated by the combustion of fuel. Due to the tendency of hot air to rise upward, the heat generated rises to fill the space of the balloon. One this space is full of trapped hot air, the heat's tendency to rise causes the hot air balloon to be lifted into the air. 
german3 years ago
3 0

Sample Response: Convection is the method of thermal energy that occurs in hot air balloons. Thermal energy is transferred when the air above the flame becomes warm and less dense, and rises. Cool, dense air sinks and takes the place of the warm air that rises. The cool air is warmed by the flame, becomes less dense, and rises. This cycle continuously warms up the air in the balloon.

You might be interested in
The chart below shows the average surface temperature or temperature range for each of the eight planets.
Vaselesa [24]

Answer:

A) Earth and the other inner planets have higher average surface temperatures than the outer planets.

Explanation:

the earth and the other inner planets have higher average surface temperatures than the outer planets.

The reason for this response is due to the distance between the sun and the respective planet, the source of energy generation is the sun and the only way in which the temperature increase of each planet is guaranteed is by radiation, the further away a planet is from its star, its temperature will decrease. Although it is also important to highlight the atmospheric composition of the planet if this planet in its stratosphere has high density clouds that do not allow the entry of solar radiation, the temperature of the planet's surface will not increase, independent of the distance from the sun, but these are more complex cases where specialists in that area enter to perform a study in detail.

4 0
3 years ago
Read 2 more answers
A good description of magnets would be, "Magnets are
madreJ [45]
B-things that can attract iron.
5 0
3 years ago
A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm. I
scZoUnD [109]

Answer:

Magnification will be equal to 3

Explanation:

We have given focal length of the converging lens F_1=20cm

Focal length of the diverging lens F_2=30cm

Object is placed 40 cm to the length of the converging lens d = 40 cm

Combination of the focal length will be equal to

\frac{1}{F}=\frac{1}{F_1}+\frac{1}{F_2}

\frac{1}{F}=\frac{1}{20}+\frac{1}{-30}=\frac{1}{20}-\frac{1}{30}=\frac{1}{60}

F = 60 cm

So combination of the focal length will be 60 cm

Magnification is given by

M=\frac{F}{F-d}=\frac{60}{60-40}=3

So magnification will be equal to 3

3 0
3 years ago
If oxygen and steel wool are combined is it a physical change or chemical change?
Anon25 [30]

Answer:

I think it would be a chemical change.

Explanation:

Because a physical would be like crushing it or something along that line.

4 0
3 years ago
Read 2 more answers
What is the time required for an object starting from rest.
sashaice [31]
Time required for what?
6 0
2 years ago
Other questions:
  • Robotic technology is used for servicing spacecrafts. One group of scientists used robotic technology to design this model of a
    8·1 answer
  • The allowed energies of a simple atom are 0.0 eV, 3.0 eV, and 4.0 eV. An electron traveling at a speed of 1.3*10^6 m/s collision
    5·1 answer
  • Some birds migrate 20,000 miles. If 1 mile equals 1.6 kilometers, calate the distance these birds fly in kilometers.
    6·1 answer
  • How do cranial nerves transmit information to the senses?
    10·2 answers
  • Which type of graph would be best for showing the percentage of people in a family with different jobs? A. Circle graph B. Scatt
    15·1 answer
  • A demented scientist creates a new temperature scale, the "Z scale." He decides to call the boiling point of nitrogen 0°Z and th
    14·1 answer
  • An object having mass m is attached to a spring of force constant k oscillates with simple harmonic motion. The total mechanical
    11·1 answer
  • Which of the following is NOT a human blood type?
    10·2 answers
  • Why do specific heat capacity of objects differ ?​
    10·2 answers
  • Height of cannon 5 m, initial speed of projectile 15m/s, angle of launch 0 degrees. What is the range and time in the air? Pleas
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!