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
daser333 [38]
3 years ago
12

On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen se

eing her breath in this way?
Physics
2 answers:
murzikaleks [220]3 years ago
8 0

Answer:

Condensation

Explanation

If it is cold outside the gaseous water molecules in our breath start accumulating in atomic/molecular clusters which then turns into the breath we are able to see. This process is known as condensation.

zhuklara [117]3 years ago
3 0
It's cold outside, the water vaper in your breath condenses into tiny droplets of liquid water and ice that you can see.
You might be interested in
Consider the following statements. A. Heat flows from an object at higher temperature to an object at lower temperature; B. Heat
Monica [59]

Answer:

A. Heat flows from an object at higher temperature to an object at lower temperature

Explanation:

The option A obeys the 2nd law of thermodynamics. The heat will flow from the object at higher temperature to the object at Lower temperature till they reach an equilibrial state.

Heat doesn’t necessarily flow from an object with higher thermal energy to an object with lower thermal energy because an object has a higher thermal energy when it’s mass is more than the other. This makes B wrong.

C is wrong because heat moves from an object with higher temperature to objects with Lower temperature regardless of the state of matter.

8 0
3 years ago
A small sphere is at rest at the top of a frictionless semicylindrical surface. The sphere is given a slight nudge to the right
V125BC [204]

Answer:

vi = 4.77 ft/s

Explanation:

Given:

- The radius of the surface R = 1.45 ft

- The Angle at which the the sphere leaves

- Initial velocity vi

- Final velocity vf

Find:

Determine the sphere's initial speed.

Solution:

- Newton's second law of motion in centripetal direction is given as:

                         m*g*cos(θ) - N = m*v^2 / R

Where, m: mass of sphere

             g: Gravitational Acceleration

             θ: Angle with the vertical

             N: Normal contact force.

- The sphere leaves surface at θ = 34°. The Normal contact is N = 0. Then we have:

                         m*g*cos(θ) - 0 = m*vf^2 / R

                         g*cos(θ) = vf^2 / R    

                         vf^2 = R*g*cos(θ)

                         vf^2 = 1.45*32.2*cos(34)

                        vf^2 = 38.708 ft/s

- Using conservation of energy for initial release point and point where sphere leaves cylinder:

                          ΔK.E = ΔP.E

                          0.5*m* ( vf^2 - vi^2 ) = m*g*(R - R*cos(θ))

                          ( vf^2 - vi^2 ) = 2*g*R*( 1 - cos(θ))

                          vi^2 =  vf^2 - 2*g*R*( 1 - cos(θ))

                          vi^2 = 38.708 - 2*32.2*1.45*(1-cos(34))

                          vi^2 = 22.744

                           vi = 4.77 ft/s

4 0
3 years ago
A car traveled north 25 km for 1 hour. The car’s SPEED is 25 km/hr north.
kramer

Answer:

hgk

Explanation:

6 0
3 years ago
How does size of an object affect its gravity
irakobra [83]

Answer:

the more particles packed together the faster it falls

Explanation:

the mass + the 1 constant g-force = the speed without adding air resistance

6 0
2 years ago
Please dont delete this question......
Juli2301 [7.4K]

Answer:

c

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • In a compressional wave the denser the medium is at the compressions the smaller is amplitude?
    14·1 answer
  • a stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. determine the depth of the well. .
    10·1 answer
  • What happens to the electric field around a single charge when another charge is added to the system?
    11·2 answers
  • Calculate the impulse of a 0.140 kg baseball that starts at rest on a tee and reaches a final velocity of 20 m/s after being str
    12·2 answers
  • A net force of 500 newtons causes
    14·1 answer
  • Compasses line up with magnetic fields. A compass will line upA. Parallel to magnetic field lines, with the south pole pointing
    13·2 answers
  • 70 POINTS HELP PHYSICS THE PICTURE HAS THE QUESTION AND POSSIBLE CHOICES
    5·1 answer
  • Is kirchoff's law applicable for ac circuits?
    9·1 answer
  • If two objects have different temperatures when they come in contact, heat will flow from the warmer
    6·1 answer
  • What voltage is required to move 2A through 5Ω?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!