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
Karolina [17]
3 years ago
9

Why does cold water sink?

Physics
2 answers:
seraphim [82]3 years ago
8 0
It’s because warm air is less dense
KATRIN_1 [288]3 years ago
6 0
Because Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water. When fluids are cooled, they contract and therefore become more dense. Any object or substance that is more dense than a fluid will sink in that fluid, so cold water sinks in warmer water
You might be interested in
Consider a system consisting of an ideal gas confined within a container, one wall of which is a movable piston. Energy can be a
Helen [10]

Complete Question

Consider a system consisting of an ideal gas confined within a container, one wall of which is a movable piston. Energy can be added to the gas in the form of heat by applying a flame to the outside of the container. Conversely, energy can also be removed from the gas in the form of heat by immersing the container in ice water. Energy can be added to the system in the form of work by pushing the piston in, thereby compressing the gas. Conversely, if the gas pushes the piston out, thereby pushing some atmosphere aside, the internal energy of the gas is reduced by the amount of work done.

          pV=nRT

so the absolute temperature T is directly proportional to the product of the absolute pressure p and the volume V,Here n denotes the amount of gas moles,which is a constant because the gas is confined and R is the universal constant

What is the \triangle U as the system of ideal gas goes from point A to point B on the graph recall u is proportional to T

Answer:

\triangle T=0

\triangle V=0

The gas A and B have same internal energy

Explanation:

From the question we are told that

Pa=u atm\\Va=1m^3\\Pb=1 atm\\Vb=4m^3

Generally the equation of temperature is mathematically given as

Ta=\frac{Pv}{nR}

Ta=\frac{u*1}{nR}

And

Tb=\frac{PbVb}{nR}

Tb=\frac{u*1}{nR}

Generally the change in temperature \triangle T is mathematically given as

\triangle T=Tb-Ta=Tb=\frac{u*1}{nR}-\frac{u*1}{nR}

\triangle T=0

Generally the change in internal energy \triangle V

\triangle V=nC_v \triangle T\\

\triangle V=0

Therefore with

\triangle T=0

\triangle v=0

The gas A and B have same internal energy

6 0
3 years ago
Define electromagnetic radiation ​
fiasKO [112]

Answer a kind of radiation including visible light, radio waves,gamma rays,and x-rays,in which electric and magnetic fields vary simultaneously

 

Explanation:

5 0
3 years ago
What happens to the sum of the ball's kinetic energy and potential energy as the ball rolls from point A to point E? Assume ther
sesenic [268]

Answer:

C. The sum remains the same.

Explanation:

The sum of the kinetic and potential energy remains the same as the all rolls from point A to E.

We know this based on the law of conservation of energy that is in play within the system.

The law of conservation of energy states that "energy is neither created nor destroyed within a system but transformed from one form to another".

  • At the top of the potential energy is maximum
  • As the ball rolls down, the potential energy is converted to kinetic energy.
  • Potential energy is due to the position of a body
  • Kinetic energy is due to the the motion of the body
7 0
3 years ago
The change from liquid water to water vapor is called___
Jet001 [13]
The answer is a.evaporation

hope this helps!

can i have brainiest?
7 0
3 years ago
Read 2 more answers
What has an ionised atom lost or gained?<br> Protons<br> Gamma Rays<br> Electrons<br> Neutrons
vagabundo [1.1K]

Answer:

Electrons

Explanation:

Ionised atoms loose and gain electrons.

hope it helps!

6 0
3 years ago
Other questions:
  • What is the length of the x-component of the vector shown below?
    13·1 answer
  • A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a dire
    14·1 answer
  • Household wiring often uses 2.0 mm diameter copper wires. The wires can get rather long as they snake through the walls from the
    13·1 answer
  • The average density of the Sun is on the order 103 kg/ m3 . (a) Estimate the diameter of the Sun. (b) Given that the Sun subtend
    5·1 answer
  • CH4 + 2O2 → CO2 + 2H2O The number in front of a compound in a balanced chemical equation is known as a(n) A) charge. B) coeffici
    7·1 answer
  • When the velocity of an object is tripled, by what factor is its momentum changed ?
    12·1 answer
  • A solid, uniform sphere of mass 2.0 kg and radius 1.8 m rolls from rest without slipping down an inclined plane of height 7.5 m.
    12·1 answer
  • Easy science question please help. Will give brainliest
    8·2 answers
  • What is an insurance premium?*
    6·1 answer
  • How many elements have been discovered so far?​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!