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Communication is the act of conveying meanings from one entity or group to another through the use of mutually understood signs, symbols, and semiotic rules. The main steps inherent to all communication are: The formation of communicative motivation or reason. Message composition. Message encoding.

communication is the act of exchanging information, ideals etc.

Communication is an act of converting, exchanging information, ideas etc.

The acts of share exchanging of information and idea is kown as communication

Communication is the act of conveying meanings from one entity or group to another through the use of mutually understood signs, symbols, and semiotic rules. The main steps inherent to all communication are: The formation of communicative motivation or reason. Message composition. Message encoding.

the imparting or exchanging of information by speaking, writing, or using some other medium.

communication is the act of conveying exchanging information,ideas etc.

the methods that are used for travelling to and from a place or for sending messages between places

messages between is the right answers

the act of sharing or exchanging information, ideas or feelingsसूचनाओं, विचारों और भावनाओं के आदान-प्रदान की क्रिया; संपर्क, संचार

it refer to a process of sharing thing with other

communication is the one or more person for any subject

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how we take NLA =1

say how we take NLA=1

Perpendicular to the plane of the wire

Asolenoidis a cylindrical coil of wire whose diameter is small compared to its length.

The poles of the bar magnet do not lie exactly on the end of the magnet but is somewhat inside. In solenoid poles can be considered to be lying at the edge.

2) The magnetism retains in the bar magnet naturally but in solenoid the magnetism is there so long current flows through it.

3) Magnetic field of a bar magnet emanates from throughout the body of the magnet, with more intensity at the poles. While there is no field emanating from the lateral surface of the solenoid.The nature of magnetic field lines produced by a solenoid is similar to that of a bar magnet.the field lines are closed curves, they emerge from the north pole and merge in the south pole outside the magnet and inside the direction is from south to north.inside the solenoid and a bar magnet the field is uniform.the poles in a solenoid can be determined by using a bar magnet or by clock face rule.

Explanation :magnetic field is created around the path of moving charged particle . In case of moving electrons magnetic field is created around on its path of motion due to the fact that electron is negatively charged . ,

While neutrons are neutrals , means there are no charge on neutrons. so, in case of neutrons , magnetic field couldn't be possible . Hence , magnetic field due to motion of neutrons is 0 .

Here is clear , there is no similar magnetic field produced around thin beam of neutrons .

Applying the right hand thumb rule, the direction of magnetic field would be anti-clockwise around the direction of current.

So, the magnetic field would be to point P and towards the plane of paper. At point Q, the direction of magnetic current would be from the conductor and away from the plane of paper.

Since magnetic field is stronger near the conductor and weaker as we move away from the conductor, so the magnetic field would be stronger near point Q than near point P.

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samj me nhi aya pls explain again

As a current flowing in the straight current conductor carrying wire increases it's strength of magnetic field also increases. This means current flowing in the conductor is directly proportional to it's strength of magnetic field.

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Magnetic Flux:Magnetic flux is a measurement of the total magnetic field which passes through a given area. It is a useful tool for helping describe the effects of the magnetic force on something occupying a given area. The SI unit of magnetic flux is the weber (Wb) (in derived units: volt seconds), and the CGS unit is the maxwell

Flux Density: The flux density is the number of magnetic lines of flux that pass through a certain point on a surface. The SI unit is T (tesla), which is weber per square metre (Wb/m2) and the unit in the CGS system is G (gauss)

Magnetic Field Strength:Magnetic field strength is one of two ways that the intensity of a magnetic field can be expressed. Technically, a distinction is made between magnetic field strength H, measured in amperes per meter (A/m), and magnetic flux density B, measured in Newton-meters per ampere (Nm/A), also called teslas (T).

Magnetic field strength H is measured inamperes permeter(A/m).

Magnetometer

Magnetometer

In Carnot cycle T1=208, T2=808.

Equation for find efficiency of heat engine:

Efficiency= 1-(T2÷T1).

1-(808÷208) =74%

Maximum efficiency for given tempreture is 74%.

In thermodynamics, areversibleprocess is a process whose direction can be "reversed" by inducing infinitesimal changes to some property of the system via its surroundings. ...Reversibility meansthe reaction operates continuously at quasiequilibrium

AReversibleHeatEngineshas themaximum efficiency. ... This taking heat from a single reservoir and turning it to work with no other changes is a contradiction to theCarnotassumption. Thus to stay consistent: No heatenginecan haveefficiencygreater than areversibleheatengine

We all know , magnetic field in a coil is directly proportional to the current and in versely proportinal to radius

thefore if current is doubled and radius is halved them magnetic field will increase . it will be 4 times the initial magnetic field

option d )All three laws are independent of each other.

option (d) because motion first , second,third the independent of each other

d)newton's laws are independent of each other

Option (d) because motion firstSecond, third are independent

zero is the answer for this question

Question no 2.Answer is 4) Zero

zero is the best answer

question no 2.option d. is best answer for this question

zero is the right answer

the correct answer is d i.e zero

D, option is correct answer

option (4),zero is the right answer of question

Carnot principles are only for the cyclical devices like heat engines, which state that :The efficiency of an irreversible heat engine is always less than the efficiency of a reversible one operating between the same two reservoirs.The efficiencies of all reversible heat engines operating between the same two reservoirs are the same.This theorem states that no engine working between two given temperatures can be more efficient than a reversible engine working between the same two temperatures and that all the reversible engines working between the same two temperatures have the same efficiency, whatever the working substance may be. According to the Carnot theorem, the reversible engine will always have a greater efficiency than the irreversible one. The reversible heat engine operates on a reverse cycle and functions as a heat pump (or refrigerator).

The Carnot cycle is reversible representing the upper limit on the efficiency of an engine cycle. Practical engine cycles are irreversible and thus have inherently lower efficiency than the Carnot efficiency when operating at the same temperatures.One of the factors determining efficiency is the addition of to the working fluid in the cycle and its removal. The Carnot cycle achieves maximum efficiency because all the heat is added to the working fluid at the maximum temperature.

Kepler's three laws of planetary motion can be described as follows:

The path of the planets about the sun is elliptical in shape, with the center of the sun being located at one focus. (The Law of Ellipses)An imaginary line drawn from the center of the sun to the center of the planet will sweep out equal areas in equal intervals of time. (The Law of Equal Areas)The ratio of the squares of the periods of any two planets is equal to the ratio of the cubes of their average distances from the sun. (The Law of Harmonies)

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law of orbitslaw of area law of period

Newton’s First Law of Motion also known as Law of Inertia states that every object persists to stay in uniform motion in a straight line or in the state of rest unless an external force acts upon it.

Newton’s Second Law of Motion states that force is equal to the change in momentum per change in time. For a constant mass, force equals mass times acceleration, i.e. F = m*a. Learn about the Acceleration in detail here.

Newton’s Third Law of Motion states that for every action there is an equal and opposite reaction.

Newton'sfirst lawstates that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition ofinertia.Thesecond lawexplains how the velocity of an object changes when it is subjected to an external force. The law defines aforceto be equal to change inmomentum(mass times velocity) per change in time. Newton alsoThethird lawstates that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A

Every action has equal and opposite reaction.

Newton's first lawstates that every object will remain at rest or in uniformmotionin a straight line unless compelled to change its state by the action of an external force. ... Thethird lawstates that for every action (force) in nature there is an equal and opposite reaction

first law say that a body will remain in rest or motion until or unless an external force is applied

Because the image is smaller, more image can fit onto themirror, so aconvex mirrorprovides for a larger field of view than a planemirror. This is why they are useful. They areusedwhenever amirrorwith a large field of view is needed. For example, the passenger-siderear viewmirroron acarisconvex.

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1.Concave mirrorsare usedby dentistsbecause at a short range (object distances less than the focal length) they produce magnified, upright images.

focal length Is have the radius of curvature ..or ..radius of curvature is 2 times focal length .r=2ff=r/2

a one is softer one.

1st one produces soft sound whereas 2nd one produces rough sound.

ratio of sin of angle of incidence to the angle of refraction is always constant(refractive index)

According to Snell law the ratio to the sine of angle of incidence by sine of angle of refraction is given by constant

The velocity of boy running horizontal is = vi

now velocity of water is downward = -uj ... ( +j taken in upward direction)

so, the velocity of water w.r.t boy will be = -uj-vi

and angle will tan∅ = vertical/horz = -u/-v

so, ∅ = tan-¹(u/v)

option 3

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can you also give me more solutions

Not able to see the equation clearly kindly repost the question in better quality

RAOULT’S LAW

Lowering of vapour pressure-

The molecules of liquid are in a state of constant motion in all directions, some of these molecules have higher kinetic energy than others. Some molecules which are present at the surface of a liquid may leave the surface & go into vapour state. The pressure exerted by the vapours of a liquid on its surface is known as vapour pressure of that liquid.

Vapour pressure of a liquid depends upon temperature & is independent of amount of liquid & vapours present in the system.

When a nonvolatile solute is dissolved in a liquid, the escaping tendency of liquid molecules is lowered hence vapour pressure of liquid is lowered. This difference of vapour pressure is called lowering of vapour pressure.

Lowering of vapour pressure= p-ps

p=vapour pressure of pure solvent

ps= vapour pressure of pure solution

Relative lowering of vapour pressure = p-ps/p

Raoult’s Law-

According to Raoult’s law,

“The relative lowering of vapour pressure of solvent is equal to the mole fraction of the solute.”

Let, No. of moles of solute = n

No. of moles of solvent = N

Total moles = n+N

Vapour pressure of pure solvent= p

Vapour pressure of solution =Ps

lowering of vapour pressure= p-ps

Relative lowering of vapour pressure= p- ps/p

So, According to Raoult’s Law,

p- ps/p =n / n+N

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Incident and reflected rays are parallel if 2a+2b = 180 deg.=> a+b=90 deg.angles DOE+ ODE+DEO = 180 deg90-a + 2c + 90-b = 180 deg => c = 45 deg.angle between mirrors = 2c = 90 deg.

4th options is true means a,c.its given in answersheet.

sorry image is not clear of ur solution... please upload it clearly

frictional force acting upward on B = μN

and for Value of N ,

acceleration of system = F/(M+m)

so, force equation on B => N = m*a = Fm/(M+m)

now, that Frictional force should balance the mg of block B

so, μN = mg=> μFm/(M+m) = mg=> F = g(M+m)/μ

option 3

Rcm = (m1r1 +m2r2)/(m1+m2)

=> Rcm = (3*2i+3*5j+2*4i+2*2j)/(3+2)=> Rcm = (14i+19j)/5 = 14i/5+19i/5

option 2

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