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⭐Actually welcome to the concept of the CHEMICAL EQUILIBRIUM...

⭐basically we KNOW that the equation for the Gibbs ENERGY at equilibrium is ..

⭐Delta G° = RT LN (KEQ)

⭐OR

⭐DELTA G° = R T (2.303) ( log (keq))

The ANSWER is 60 degree. Because angle MADE by reflective RAY is EQUAL to incident ray.


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⭐Actually welcome to the concept of the MECHANICS ..

⭐basically here the ...,

⭐Mass per UNIT LENGHT is GIVEN as M/L

⭐thus the acceleration will be F / M

⭐after solving we get this..

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Potencial=mgh =1kg×10m/s×5m =1×10×5=50joule

I am not SURE it is 5

Answer of P Q R is A NUMBER ANSWERS

Magnetic field is produce in a WIRE or other conductor when current is PASS through in it.

The ANSWER is OPTION "a" . 6 km/h.

Total distance=160kmph
time taken in FIRST 120km=120/80=3/2h.
time taken in NEXT 40km=40/40=1h.
average SPEED = total distance/total time taken.
=>160/5/2=64kmph. ANS

The SOUND will travel slower becoz of the HELMET nd not possible to shout as if U will shout no one will listen dear hope u like my ANSWER

At NORTH POLE and SOUTH pole

THEORETICAL COEFFICIENT of PERFORMANCE

Hehdnodesfosshwisoss

Physical State 

The mineral graphite is steel gray to black in color and is odorless. It is opaque and has a sub-metallic luster. It is known to have a very SOFT and greasy texture. It can be broken easily and leaves a black streak on the hand when touched. Although graphite is soft and flexible, it is not elastic in nature.

Structure

This element is crystalline in nature; however, perfect crystals of graphite are rarely found. The carbon atoms in its structure are arranged in a hexagonal manner in a planar, condensed ring system. This gives the graphite crystals a hexagonal shape. Different layers of this element are stacked together and held by weak covalent FORCES to form a giant covalent structure.

Melting Point

Graphite has a high melting point above 3000ºF, similar to that of diamond―the other allotrope of carbon. Hence, it is stable over a wide range of temperatures.

Density

As there is a LOT of vacant SPACE between the graphite sheets held by the weak covalent bonds, and the density of graphite is 2.09 to 2.33 g/cc, which is lower than that of diamond. The measured specific gravity of this element is approximately 2.26 g/cc. However, it depends upon the purity of graphite. Graphite with a higher ash content shows a specific gravity higher than 2.26, while its natural form has a lower specific gravity or density due to the trapped porosity.

Solubility

Graphite is insoluble in WATER as well as other organic solvents. There are no attractive forces that occur between the solvent molecules and the carbons atoms in its structure, and thus, it fails to dissolve in any of the organic solvents.

Electrical Conductivity

There is a vast delocalization of electrons within the carbon layers of graphite. The delocalized electrons are free to move and are able to conduct electricity, thus, making graphite a good conductor of electricity.

Chemical Properties 

➤ Graphite is chemically inert to almost all chemicals.

➤ It burns completely when heated in oxygen to form carbon dioxide. However, it fails to burn in air, even if it is heated to high temperatures.

➤ When heated in the presence of concentrated sulfuric acid and potassium dichromate, graphite gets oxidized to carbon dioxide.

➤ Due to its chemical inertness and stability at high temperatures, it is widely used as a refractory material.

Uses of Graphite

Manufacture of 'lead' used in pencils

Refractories

Steel making

Lubricant

Making electrodes

Manufacture of polishes and paints

Molds in foundry

This was all about the properties and uses of graphite. The unique properties of this carbon compound are responsible for its use in a variety of applications

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The IMAGE appears to be LOCATED at the point of apparent divergence. Because the rays never really converge, a virtual image cannot be projected ONTO a screen. ... Although the rays of light seem to come from behind the mirror, light from the source only exists in FRONT of the mirror



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Which SOLUTION its BIG CHAPTER PLZZ write question

Ydhbskkf BFF jddkddjjdjdufjsn

Density of MIX = mass of mix / volume of mix  =  (VA  da  +   VB  DB) / ( Va + Vb)

Gehshffjdhehvsisheisgsjssysvvshgsvsghhsbbshgsdvu

Mostly lazor light are red in colour.. And according to NEWTON... Red light has more wavelength,which means it can SCATTER least... Scattering of the light is inversely PROPORTIONAL to 1/40of the wavelength...THUS more wavelength LESS scattering

To do this it MUST have zero(0) INTERNAL resistance for all voltage to APPEAR across its terminals. The same applies to an ideal current source in that the shunt resistance must be INFINITE (openCircuit) to allow all current to flow out of its terminals.

When OBJECT is KEPT in FRONT of that....

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u=0
h=20 m
g=10 m/s^2
v=?
t=?

I don't KNOW SORRY BO

Pura SAAL Kya kiya
KOI rasta nahi hai din RAAT dhaayan laga Kar MEHNAT KARO samajne ka kosis karo

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The principal focus of a spherical MIRROR is a point on the principal axis of the spherical mirror at which, the light RAYS which are parallel to the principal axis ACTUALLY converge (meet) or APPEAR to diverge after reflection.


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Using the Gaussian form of the lens EQUATION, a negative sign is used on the linear MAGNIFICATION equation as a REMINDER that all real images are INVERTED. If the image is virtual, the image distance will be negative, and the magnification will THEREFORE be positive for the erect image.


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It states that within the limit of elasticity, the stress induced (σ ) in the solid due to some external force is always in proportion with the strain (ε ). In other words the force CAUSING stress in a solid is directly proportional to the solid's deformation. Consider a SPRING with a spring constant k that is stretched with a force F extends to a distance x with reference to the initial position.
Force required for deformation x is given by

F = -Kx



The determination of elastic modulus E from the TENSILE experiment results is depicted in the figure.
It can be seen from the graph that the curve of stress versus strain is linear within the limit of elasticity of the material. It is inferred that for the load below the limit of elasticity, the stress induced is in proportion with the strain in the solid.

Hook's law tells about linear REALTIONSHIP between stress and strain of CERTAIN ELASTIC materials. That is within PROPORTIONALITY LIMIT, stress is proportional to strain.
Now why certain elastic materials? This is because, elasticity means regaining original shape after removal of load. So elasticity does not speak anything about linear relationships about stress and strain. This is why an elastic material may not obey Hook's law. Rubber does not obey Hook's law. But the materials which obey Hook's law are elastic materials. So I used the words CERTAIN ELASTIC MATERIALS.
Now about PROPORTIONALITY LIMIT. If you look into the stress strain relationship of mild steel and many other materials, you will see stress is proportional to strain upto a certain limit. This is the proportional limit. After that point the relationship does not remain linear, yet the stress is within elastic limit, that is on removal of load strain will be zero. However the proportionality limit and elastic limit are hard to distinguish, hence for simplifications sometimes they are assumed to be the same point.
So keep in mind while applying Hook's law, CERTAIN ELASTIC MATERIALS, and PROPORTIONALITY LIMIT.


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Yeah... the answer is correct!!
Because pressure exerted by liquid increases with the height so BASES of DAMS are MADE broader.

I hope it helps you...

When the wet clothes are spread, their surface area increases. As the surface area increases, the PROCESS of drying or evaporation and the WIND speed ALSO increases. Thus the wet cloths DRY in faster manner.

You see something when light bounces off that thing and into your eyes.

If you shine your face, light goes from torch to face to mirror to eyes.

If you shine the mirror, light goes from torch to mirror to face to mirror to eyes.

So shining on your face MEANS one less BOUNCE. Also, depending on the angle you shine it at the mirror, it might go off in some other direction and not hit your face. So, you wouldn't be ABLE to see your face at all. The light coming from the mirror would make the light from your face look less brighter, EVEN if it did hit your face directly.

Shine at face wins.
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For instance LET's take a rubber BAND and keep stretching it ... U are APPLYING a good AMOUNT of force and suddenly it breaks .. This is how force changes shape of some material

A boy catches a pizza in left HAND a apple in right hand and his MOTHER comes to him and says "you eat only apple it is good for HEALTH and pizza leads to health PROBLEMS

Chanhe in K. E is 50

I don't KNOW the ANSWER.

The SPLIT RINGS r used to REVERSE the DIRECTION of the CURRENT in the coil

The average speed of a BODY is the TOTAL distance TRAVELLED DIVIDED by the total time taken to cover the distance..
Average apeed =Total distance travelled
___________________
Total time taken

Principal FOCUS of CONVEX lens is a POINT on the principal axis to which rays PARALLEL to the principal axis converge after reflection.

I don't KNOW ............