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A vernier caliper is a measuring device used to precisely measure linear dimensions

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According to Pascal's law, Pressure is transmitted equally and undiminished through out the fluid.P1=P2F1/A1=F2/A2F1= (A1/A2 ) F2=[π(5 x10⁻²m)²/π(15x10⁻²m)² ](1350Nx9.8m/s2)=1470N=1.5 x 10³ NThe air pressure that will produce this forceP=F1/A1=1.5x10³N/π(5x10⁻²)² m=1.9 x 10⁵ PaThis is almost the double of atmospheric pressure.

Vernier callipers are made in various sizes. The range would depend on the size. The most usual size is 0 - 150 mm

Let the time taken is t

heat loss by kettle = heat gain by water 1.25 × 10³ × t = Q = mC∆T C is the specific heat capacity of water e.g., C = 42J/Kg/K∆T = (100 - 25)°C1250 × t = 1 × 4200× ( 100 - 25) 1250 × t = 4200 × 75 50t = 12600 t = 1260/5 = 252 sec

hence, time taken = 252 sec

Let the time taken is t

heat loss by kettle = heat gain by water 1.25 × 10³ × t = Q = mC∆T C is the specific heat capacity of water e.g., C = 42J/Kg/K∆T = (100 - 25)°C1250 × t = 1 × 4200× ( 100 - 25) 1250 × t = 4200 × 75 50t = 12600 t = 1260/5 = 252 sec

Ans :- First law of Kapler or Law of orbits

According to the first law of Kapler " All planets revolves in elliptical orbits while Sun situated at the one of the focus"that is mean all planets does not revolves in a circular orbit rather they revolves in elliptical orbit which has two focus and sun can be at the focus of one of them.

Coulumb's Law is a law stating that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them.

1 dioptre is the power of a lens whose focal length is one metre i.e. 1D=1m^-1. Power of a convex lens is positive and that of a concave lens is negative. A person suffering from hypermetropia needs to wear lens with positive power

The basic unit of electriccharge, equal to the quantity ofchargetransferred inonesecond by a steady current ofoneampere, and equivalent to 6.2415 × 10 power 18elementary charges, whereoneelementarycharge is thechargeof a proton or the negative of thechargeof an electronic.

Coulomb is the SI unit of electric charge which is equal to the amount of charge transported by a current of one ampere in one second.

It is denoted by C.

TheBiot Savart Lawis used to determine the magnetic field intensity H near a current carrying conductor or we can say it gives the relation between magnetic field intensity generated by its source current element.The law was stated in the year 1820 by Jean BaptisleBiotand FelixSavart.The direction of the magnetic field follows the right hand rule for the straight wire.Biot Savartlaw is also known as Laplace’s law or Ampere’s law.

t = 1 min = 60 sE = VIt = 10 × 2 × 60 = 1200 J

Ampere-Maxwell law statesthat the line integral of magnetic field along a closed loop around a current carrying wire is equal to μotimes the sum of the current in the wire and the displacement current (ID).

Precision refersto the closeness of two or moremeasurementsto each other. Using the example above, if you weigh a given substance five times, and get 3.2 kg each time, then yourmeasurementis veryprecise.

Maxwell’s four equations describe the electric and magnetic fields arising from distributions of electric charges and currents, and how those fields change in time. They were the mathematical distillation of decades of experimental observations of the electric and magnetic effects of charges and currents, plus the profound intuition of Michael Faraday. Maxwell’s own contribution to these equations is just the last term of the last equation—but the addition of that term had dramatic consequences. It made evident for the first time that varying electric and magnetic fields could feed off each other—these fields could propagate indefinitely through space, far from the varying charges and currents where they originated. Previously these fields had been envisioned as tethered to the charges and currents giving rise to them. Maxwell’s new term (called the displacement current) freed them to move through space in a self-sustaining fashion, and even predicted their velocity—it was the velocity of light!

Here are the equations:

1. Gauss’ Law for electric fields:

∫E→⋅dA→=q/ε0. (The integral of the outgoing electric field over an area enclosing a volume equals the total charge inside, in appropriate units.)

2. The corresponding formula for magnetic fields:

∫B→⋅dA→=0. (No magnetic charge exists: no “monopoles”.)

3. Faraday’s Law of Magnetic Induction:

∮E→⋅dℓ→=−d/dt(∫B→⋅dA→).

The first term is integrated round a closed line, usually a wire, and gives the total voltage change around the circuit, which is generated by a varying magnetic field threading through the circuit.

4. Ampere’s Law plus Maxwell’s displacement current:

∮B→⋅dℓ→=μ0(I+ddt(ε0∫E→⋅dA→)).

This gives the total magnetic force around a circuit in terms of the current through the circuit, plus any varying electric field through the circuit (that’s the “displacement current”).

Accuracy and precision are used in context of measurement.Accuracyrefers to the degree of conformity and correctness of something when compared to a true or absolute value, whileprecisionrefers to a state of strict exactness — how consistently something is strictly exact.

Definition:Accuracy is the ability of the instrument to measure the accurate value. In other words, it is the closeness of the measured value to a standard or true value. Theaccuracy can be obtained by taking the small readings.The small reading reduces the error of the calculation.

accuracy is the closest value to the true value

the quality or state of being correct or precise

Botanical gardens is crct it can be study in clearly , lively,..........

Accuracyrefers to the closeness of a measured value to a standard or known value. For example, if in lab you obtain a weight measurement of 3.2 kg for a given substance, but the actual or known weight is 10 kg, then your measurement is notaccurate. In this case, your measurement is not close to the known value

ऑप्शन (क) V=IR सही है।

thanku 👌

V=IR sahil answer h/😀😀

Kelvin to celsius subtract 273Hence 300K =300-273=27°CFor celcius to Kelvin add 273hence -10°C =-10+273=263K

The Law of Conservation of Charge. The net charge of an isolated system remains constant. The only way to change the net charge of a system is to bring in charge from elsewhere, or remove charge from the system. Charge can be created and destroyed, but only in positive-negative pairs.

conservation of energy law is followed

why

The law ofmomentum conservationcan be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the totalmomentumof the two objects before the collision is equal to the totalmomentumof the two objects after the collision.

Answer:human beingcanconserve biodiversityas well as can destroy. Byhumanactivities like deforestation, forest fires etc thebiodiversityof earth are destroyed. it can be conserved by baninghumanactivities.

"The role of human being in the biodiversity is very very important because, only "HUMAN IS THE ONLY LIVING ORGANISMS WHICH VERY VERY CAUSING THE HARM TO THE BIODIVERSITY " In our evolution time we can't harm the diversity but after our evolution we are causing tremendous harm to the biodiversity. also the biodiversity is answers the human by different methods like sunami,earthquakes,heavy rain fall etc.; hence there is very important role of human beings in our biodiversity.

2. 7/113. 2/34. 5/85. 3/5

. The Law of DemandThe law of demand states that, if all other factors remain equal, the higher the price of a good, the less people will demand that good. In other words, the higher the price, the lower the quantity demanded. The amount of a good that buyers purchase at a higher price is less because as the price of a good goes up, so does the opportunity cost of buying that good. As a result, people will naturally avoid buying a product that will force them to forgo the consumption of something else they value more. The chart below shows that the curve is a downward slope.

A, B and C are points on the demand curve. Each point on the curve reflects a direct correlation between quantity demanded (Q) and price (P). So, at point A, the quantity demanded will be Q1 and the price will be P1, and so on. The demand relationship curve illustrates the negative relationship between price and quantity demanded. The higher the price of a good the lower the quantity demanded (A), and the lower the price, the more the good will be in demand (C).

The world comprehensible means understandable. When we look at nature and natural phenomenon we fail to understand their complexities with ordinary knowledge. But with scientific methods we come to know that only a few basic laws and principles can very well explain most of them. ‘So many phenomenon of world, governed and understood by only a few scientific principles, are otherwise not easily understandable’

option A) wood the correct answer

human body is conductor of electricity

d) human body is the correct answer

option 'd' Human Body is conductor of electricity.

human body is the right option

human body is conductor of electricity

human body is a conductor of electricity

human being is the correct answer

wood and Human body ( wood is because,wet wood is a conductor of electricity)

location is a particular place or position.

ABose–Einstein condensate(BEC) is astate of matterof a dilutegasofbosonscooled totemperaturesvery close toabsolute zero(-273.15°C). Under such conditions, a large fraction of bosons occupy the lowestquantum state, at which point microscopic quantum phenomena, particularly wavefunction interference, become apparentmacroscopically. A BEC is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density ofnormal air, to ultra-low temperatures.

Given c1 = 20 micro f, c2 = 5 micro f

For capacitors connected in seriesTotal Capacitance= 1/(1/c1 + 1/c2)= 1/(1/20 + 1/5)= 1/(1 + 4)/20= 20/5 = 4 micro f

For capacitors connected in parallelTotal Capacitance= c1 + c2= 20 + 5= 25 micro f

What is a Hierarchy?

In biology, hierarchy refers to the taxonomical classification of living organisms in successive levels of complexity. “Kingdom” is the highest rank in such a classification while “species” is the lowest.

In other words, a hierarchy is an arrangement of categories in an increasing or decreasing order – from kingdom to species or vice-versa.

Hierarchy Classification

Obligate hierarchy: A classification where the order is followed strictly from kingdom to species or vice-versa.

Intermediary hierarchy:It does not follow the order and can be added to the categories in the obligate list like the subdivision, subspecies, superfamily, suborder, and superclass.

For upper branch net capacitance is 1uC. Given net capacitance is 5, so bottom branch should have capacitance 4(because in case of parallel capacitors they are added directly).now in bottom branch you are getting two capacitors one of 8( net of two 4 capacitors) other of unknown value C. so Capacitor C have value 8(in case of series capacitors they are added in inverse).So final answer is 8.