hi guys can you teach me how to solve a logarithm?

how about a conceptual framework can you simplify for me? needed please

Villaflor

Hello what happens when electrone stops its rotation around its nucleus if it possible how

Afzal

I think they are constantly moving

Villaflor

yep what is problem you are stuck into context?

S.M

not possible to fix electron position in space,

S.M

yes of course Villa flor

David

A bottle full of water weighs 45g when full of mercury,it weighs 360g.if the empty bottle weighs 20g.calculate the relative density of mercury and the density of mercury....pls I need help

well You know the density of water is 1000kg/m^3.And formula for density is
density=mass/volume
Then we must calculate volume of bottle and mass of mercury:
Volume of bottle is (45-20)/1000000=1/40000
mass of mercury is:(360-20)/1000 kg
density of mercury:(340/1000):1/50000=(340•40000):1000=13600

Sobirjon

the latter is true

Sobirjon

100g of water is mixed with 60g of a liquid of relative density 1.2.assuming no changes in volume occurred,find the average relative density of the mixture...take density of water as 1g/cm3 and density of liquid 1.2g/cm3

Lila

who can help me with my problem about acceleration?

how to solve this... a car is heading north then smoothly made a westward turn during the travel the speed of the car remains constant at 1.5km/h what is the acceleration of the car? the total travel time of the car as it smoothly changed its direction is 15 minutes

Vann

i think the acceleration is 0 since the car does not change its speed unless there are other conditions

Ben

yes I have to agree, the key phrase is, "the speed of the car remains constant...," all other information is not needed to conclude that acceleration remains at 0 during the entire time

Luis

who can help me with a relative density question

Lila

1cm3 sample of tin lead alloy has mass 8.5g.the relative density of tin is 7.3 and that of lead is 11.3.calculate the percentage by weight of tin in the alloy. assuming that there is no change of volume when the metals formed the alloy

Lila

morning, what will happen to the volume of an ice block when heat is added from -200°c to 0°c... Will it volume increase or decrease?

hi what is physical education?

Kate

I think it is neither decreases nor increases ,it remains in the same volume because of its crystal structure

Sobirjon

100g of water is mixed with 60g of a liquid of relative density 1.2.assuming no changes in volume occurred,find the average relative density of the mixture. take density of water as 1g/cm3 and density of liquid as 1.2g/cm3

Lila

Sorry what does it means"no changes in volume occured"?

Sobirjon

volume can be the amount of space occupied by an object. But when an object does not change in shape it will still occupy the same space. Thats why the volume will still remain the same

Ben

Most soilds expand when heated but if it changes state at 0C it will have less volume. Ice floats because it is less dense ie a larger mass per unit volume.

Richard

If someone has not studied Mathematics enough yet, should theu study it first then study Phusics or Study Basics of Physics whilst srudying Math as well?

whether u studied maths or not, it is advisable to start from d basics cuz it is essential to know dem

Nuru

wow, you got this w/o knowing math

Thomas

mathematics is everywhere

Anand

thanks but dat doesn't mean it is good without maths @Riaz....... Maths is essential in sciences particularly wen it comes to PHYSICS but PHYSICS must be started from the basic which may also help in ur mathematical ability

Nuru

A hydrometer of mass 0.15kg and uniform cross sectional area of 0.0025m2 displaced in water of density 1000kg/m3.what depth will the hydrometer sink

Lila

,i have a question of let me give answer

aways

the mass is stretched a distance of 8cm and held
what is the potential energy?
quick answer

aways

Anything that has mass. And it occupies space. So it has volume.

wenhe

States of matter are solid liquid gas and plasma

wenhe

what are Newtown's law

Lila

An object as rest will remain at rest or in motion will remain at motion. Force is mass times acceleration. And a force will have equal and opposite reaction.

wenhe

do we have any thing like plasma as a states of matter

daniel

Plasma is a state of matter. It's much later on. The sun for example is not a gas ball. Its plasma.

wenhe

why is plasma a state of matter

Lila

In lower grades you are taught that there are 3 states of matter. But later on, you'll learn that if you eat gas enough. It turns to plasma

wenhe

yes we have plasma as a state of matter

akinmeji

it is anything that occupie space and has mass

Anand

I never head of that before

daniel

Anything that occupies space and has mass is matter.

wenhe

what is the difference between vapor and gas

Lila

Plasma is best described as an ionized gas because it is made up of positively and negatively charged particles.

akinmeji

Aside plasma, we also have Bose- Einstein. this is also another state of matter

akinmeji

was bose Einstein discovered by Albert Einstein

Lila

We have like 6 states or more. But those are newly discovered.

wenhe

OK, thanks at list I have experience about that one now.

daniel

Einstein predicted it

wenhe

With another person

wenhe

what are the other states

Lila

Fermionic condensate

wenhe

OK what is Albert Einstein

daniel

And maybe more. I just rmb those. Tbh for school you only need to know 4.

wenhe

Albert Einsteinis the name of a scientist

wenhe

what is the physical state of water and salt

Lila

can I ask off topic question?

Kristine

Both are matter. So can theoretically exist in all those states. But in room temperature, water is liquid and salt is solid.

wenhe

Its about precalculus

Kristine

I'm not very good at maths. But if I can answer... Lol

wenhe

The reflector of a radiotelescope is in the shape of a parabola revolve its axis, if the diameter of the reflector is 400ft. above the vertex of the parabola, what should be the depth of reflector?

Kristine

Are there any other factors given?

wenhe

matter is merely energy condensed to a slow vibration

Vashist

Cuz with those factors, I can't solve it.

wenhe

Well. There must be another factor given or something. Like an equation of the parabola. Or else I can't solve it

wenhe

explain why water and salt are compounds

Lila

That's chem. But both water and salt are made of more than 1 element. So they are compounds.

wenhe

Compound meaning 2 or more things added together.

wenhe

salt chemically is combination of sodium n chloride whereas water is oxygen n hydrogen

Friday

deficiency of vitamin E cause ?

Friday

I don't know if this is the equation or formula your looking for; (x-h)²=4c(y-k)
(x-h)²=-4c(y-k)
(y-k)²=-4c(x-h)
(y-k)²=4c(x-h)

Kristine

If the parabola opens downward, the equation will be (x-h)²=-4c(y-k). If the parabola opens upward, (x-h)²=4c(y-k).
If the parabola opens to the left it will be -4c and if the parabola opens to the right it will be 4c

Kristine