by Ron Kurtus
|Density Factors||Increase in density beneath volcano||Ghana|
|Subatomic Particles||Bose–Einstein condensate state of matter||India|
|Kinetic Theory of Matter||Behaviour of atoms during evaporation||Namibia|
|Kinetic Theory of Matter||Attraction or repulsion between the particles of a gas||Nigeria|
|Density Factors||Density of pieces of an object||Zambia|
|Changing States of Matter||Wants online lessons from science||Zambia|
|Pressure and States of Matter||What is the effect of pressure?||Bangladesh|
|Fluid Pressure||Want to move water in a small tube||Nigeria|
|Atom as Solar System||Wants proof that Solar System Model is wrong||USA|
Increase in density beneath volcano
Topic: Density Factors
October 2, 2015
what causes an increase in density beneath a recently active volcano?
maud - Ghana
It could be that the molten lava can be compressed, thus increasing the density over solid rock.
Bose–Einstein condensate state of matter
Topic: Subatomic Particles
September 11, 2015
is bose-einstien latest disscovered state of matter ?
about it on class 12 level and also general
shivansh - India
A Bose–Einstein condensate is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero. A boson is what is called a "force carrier" subatomic particle.
The Bose–Einstein state of matter was discovered in 1995, but it is the most recent new state.
Behaviour of atoms during evaporation
Topic: Kinetic Theory of Matter
August 12, 2015
what is the behaviour of atoms during the evaporation phase change in terms of kinetic theory?
Wilka - Namibia
Evaporation is when the higher energy atoms escape the body of the liquid. Those atoms have enough kinetic energy to remain in the gas phase. The average energy of those atoms remaining in the liquid drops, because of the loss of high kinetic energy atoms.
Attraction or repulsion between the particles of a gas
Topic: Kinetic Theory of Matter
August 11, 2015
According to kinetic theory of matter,the force of attraction or repulsion between the particles of a gas are
Timilehin olawumi - Nigeria
Although the collisions between particles are elastic, the attraction or repulsions between particles is very weak.
Density of pieces of an object
Topic: Density Factors
July 28, 2015
A stone of mass 24g and density 2.5g/cm3 is split into two piece of mass 18g and 6g respectively. What is the density of the smaller piece?
Pharon - Zambia
The density of an object is its mass divided by its volume. If you just divide the object into pieces, each piece would retain the original density. Thus, the smaller piece would have a density of 2.5 (C).
You can find the volume of a piece by dividing its mass by its density. For example, the volume of the 18g piece would be 18/2.5 = 7.2 cm^3.
Wants online lessons from science
Topic: Changing States of Matter
June 23, 2015
is it possible for me to be having some online lessons from science
Benjamin - Zambia
See the index at Succeed in Understanding Physical Science to access many online lessons and quizzes on the various subjects.
Best wishes for success in your studies.
June 21, 2015
I wanted to reach out to share some educational pages that help students understand the science behind how heavy objects stay afloat in the water. I’ve collated a number of text and visual resources that explain how the concepts of buoyancy and equilibrium work.
Please take a look here >
I see that you have shared similar information and so I wondered if you would consider citing these resources on this page? http://www.school-for-champions.com/science/fluid_floating.htm
I would like to thank you for your time and consideration and if I have reached you in error, please accept my apologies.
Georgia - USA
Thanks for the resources. I added them to the How Objects Float in Fluids page.
What is the effect of pressure?
Topic: Pressure and States of Matter
May 29, 2015
What is the effect of pressure on the change of state?
ahnaf - Bangladesh
As stated in Pressure and States of Matter, increased pressure at a given temperature can result in a change of state.
Want to move water in a small tube
Topic: Fluid Pressure
May 19, 2015
please sir, am working on a project that requires water moving round a small tube. my challenge is how to get the pressure to drive the water, I need an alternative instead of using a compressor.
What other means can water be driven round a tubing arrangemnt.
thanks sir as I wait ur respond. bye
Anthony - Nigeria
I am not exactly sure of the configuration for what you are trying to do.You could have a pump of some sort between the source of your water supply or even within the path. There are a number of different types of devices that can pump or move the water.
Wants proof that Solar System Model is wrong
Topic: Atom as Solar System
April 23, 2015
I am questioning what proof there is that this theory is incomplete. If I could be given a url or website to look up to see evidence of this study that has disproved this theory that would be greatly appreciated. Thank you
Austin - USA
The Bohr or Solar System Model of the atom is a simple case. A more complex model is seen in Quantum Mechanics. See The Quantum Mechanical Model of the Atom for a resource and explanation.
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