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
liubo4ka [24]
3 years ago
14

When the burner in a hot air balloon is turned on, the temperature of the air in the balloon ________ causing its volume to ____

_____ and the balloon _________.
Physics
2 answers:
Georgia [21]3 years ago
5 0

<u>Answer</u>

Part 1) Increase

Part 2) expand

Part 3) rise


<u>Explanation</u>

When the air is heated the molecules gain kinetic energy and starts to collide with walls of the ballon making it to increase it size.

Thus the volume of the balloon expands. When this happens the balloon and its content becomes less dense and it rises.

kompoz [17]3 years ago
4 0

This is a very poorly written question.

The choice they want is 'B'.  But that's a terrible way to describe
what happens.

The volume of the balloon never needs to change.

When the burner turned on, it creates some fiery hot air
right above the flame.  The fiery hot air quickly rises to
the top of the balloon, forcing some not-so-hot air out
at the bottom. 

The fiery hot air is less dense than the air that got forced out,
so now, the average density of all the air in the balloon has
decreased. 

Since its volume hasn't changed but its average density has
decreased, the buoyant force on it (it's floating in air) has
increased.  The balloon either descends slower than before,
or else rises faster than before.
You might be interested in
A stone was dropped off a cliff and hit the ground with a speed of 96 ft/s. What is the height of the cliff? (Use 32 ft/s2 for t
nadezda [96]
The initial velocity of the stone is 0 ft/s. Given the initial velocity (Vi), final velocity (Vf), and acceleration due to gravity (g), the distance may be calculated through the equation,
                                     d = ((Vf)² - (Vi)²) / 2g
Substituting the known values,
                                     d = ((96 ft/s)² - 0))/ (2x32.2)
The value of d is 143.10 ft. 
4 0
3 years ago
A base is a substance that's the chemical opposite of an acid.<br> True or false
anygoal [31]

True

Explanation:

A base is a substance that is often used as the chemical opposite of an acid.

Both behaves in opposite way to one another.

They can be said to complementary or conjugate chemicals.

  • According to Bronsted-Lowry  theory, an acid is a proton donor and a base is a proton acceptor.
  • The lewis theory states that an acid is an electron pair acceptor while a base is an electron pair donor.
  • Acids turn blue litmus paper red and bases turns red litmus paper blue.

learn more :

Acid brainly.com/question/11062486

#learnwithbrainly

6 0
3 years ago
7. Sketch a labeled history graph of a vibrating particle. Be sure to label the axis of the graph correctly, and point out
nikklg [1K]
Heyyyyyyyyyyyyyyyyyyyy
4 0
3 years ago
Suppose a yo-yo has a center shaft that has a 0.230 cm radius and that its string is being pulled.
Fofino [41]

Answer:

Part a)

\alpha = 782.6 rad/s^2

Part B)

\omega = 587 rad/s

Part c)

a_t = 24.3 m/s^2

Explanation:

Part a)

As we know that

a = R \alpha

so we will have

a = 1.80 m/s^2

R = 0.230 cm

\alpha = \frac{a}{R}

\alpha = \frac{1.80}{0.230 \times 10^{-2}}

\alpha = 782.6 rad/s^2

Part B)

Angular speed of the yo-yo

\omega = \alpha t

so we have

\omega = 782.6 \times 0.750

\omega = 587 rad/s

Part c)

Tangential acceleration is given as

a_t = R \alpha

a_t = (3.10 \times 10^{-2})(782.6)

a_t = 24.3 m/s^2

6 0
3 years ago
Es
nexus9112 [7]

Answer:

As the skydiver falls to the Earth, she experiences positive acceleration only due to gravity.

Explanation:

As the skydiver falls to the Earth, she experiences friction in the form of air resistance which tries to slow her down and is proportional to the her velocity. So it cannot have a positive acceleration as it acts in opposite direction to slow her down.

Inertia during skydiving is experienced when we open an parachute, the parachute slows down the speed of are descent hence changing our inertia of motion with a velocity.

Only the Earth's, gravitational field has an positive acceleration as it pulls us towards the Earth, hence increasing our velocity.

3 0
3 years ago
Other questions:
  • If a person's eardrum perceives a sound with a high pitch what can be predicted about the wavelength of the sound wave?
    8·2 answers
  • how much centripetal force is needed to make a body of mass 0.5 kg to move in a circle of radius 50 cm with a speed 3ms-1
    14·2 answers
  • A transformer connected to a 120-V (rms) ac line is to supply 12,500 V (rms) for a neon sign. To reduce shock hazard, a fuse is
    9·1 answer
  • cheryl has a mug that she says is made up of matter. heather says that the hot chocolate inside the cup is made up of matter, to
    13·1 answer
  • What is an example of an ionic bond
    5·1 answer
  • For the circuit shown, which of the following is true?
    5·2 answers
  • how much energy is stored in a 7.0 cm spring that has a spring constant of 500 N/m when it is stretched 3.0 cm​
    10·1 answer
  • Arrange the following substances in order of decreasing magnitude of lattice energy. Rank the compounds in order of decreasing m
    13·2 answers
  • How does water flowing over a waterfall involve both kinetic energy and potential energy?
    6·2 answers
  • Difference between output work and input work​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!