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h in flooded SOILS has shown that the oxygen concentration approaches zero after 24 hours (however, moderate water MOVEMENT ALLOWS some oxygen to get to the plants, and damage is not as severe.) Without oxygen, the plant cannot perform CRITICAL life-sustaining functions such as respiration, water uptake, root GROWTH, etc. Water-logging also leads to accumulations of compounds like CO2, which are toxic to plants in high concentrations.Under flooded conditions, stomata in affected plants close and may remain closed for long periods, resulting in reduced respiration, transpiration and photosynthesis. Plants may be slow to recover when water recedes. Long-term impacts on the crop are often related to disease infection and retarded root development that limits access to available subsoil moisture later in the season.

ge DISTANCE It will negative when distance will be MEASURED against the DIRECTION of POLE

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ियम (OHM's LAW) के अनुसार यदि ताप आदि भौतिक अवस्थायें नियत रखीं जाए तो किसी प्रतिरोधक (या, अन्य ओह्मीय डिवाइस) के सिरों के बीच उत्पन्न विभवान्तर उससे प्रवाहित धारा के समानुपाती होता है। अर्थात् V ∝ I YA,,R का एक मात्रक ओम (ohm) है। वास्तव में 'ओम का नियम' कोई नियम नहीं है बल्कि यह ऐसी वस्तुओं के 'प्रतिरोध' को परिभाषित करता है जिनको अब 'ओमीय प्रतिरोध' कहते हैं। दूसरे शब्दों में यह उन वस्तुओं के उस गुण को रेखांकित करता है जिनका V-I वैशिष्ट्य एक सरल रेखा होती है। ज्ञातव्य है कि वैद्युत अभियांत्रिकी एवं इलेक्ट्रानिक्स में प्रयुक्त बहुत सी युक्तियाँ ओम के नियम का पालन नहीं करती हैं। ऐसी युक्तियों को अनओमीय युक्तियाँ कहते हैं। उदाहरण के लिये, डायोड एक अनओमीय युक्ति है।

of protons Configuration of nitrogen = 2 , 5HENCE TOTAL number of protons = 2 + 5                                                     = 7Charge of one protonCharge of one PROTON = + 1.6 × 10⁻¹⁹ CTotal charge of nucleus .Total charge will be charge of 7 protons.This because neutrons have no charge at all .Total charge = 7 × + 1.6 × 10⁻¹⁹ C= > + 11.2 × 10⁻¹⁹ C= > + 1.12 × 10⁻¹⁸ C+ 1.12 × 10⁻¹⁸ C

rrent FLOWS through the COIN magnetic feild are PRODUCED on each POINT on the coil

mirrior THANKS for ASKING that is why because concave mirror focus BETTER than convex

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r,◆ ANSWER -W = 600 J◆ Explaination-# Given-F = 30 Ns = 20 mθ = 0°# Solution-As the surface is smooth there will be no frictional force.Work done by force in displacing TROLLEY is calculated by-W = F.sW = FscosθW = 30 × 20 × cos(0°)W = 600 JTherefore, work done by force in pulling the trolley is 600 J.Hope this HELPS...

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er scale is a visual AID to TAKE an accurate MEASUREMENT reading between two graduation making on a linear scale by USING mechanical interpolation there by increasing resolution and reducing measurement uncertainty by using vernier acuity to reduce HUMAN estimation error.

riend,◆ Answer -R1/R2 = 1/6◆ Explaination-# Given-ρ1 = 1.62×10^-18 ohm-mρ2 = 4.86×10^-18 ohm-ml1/l2 = 2d1/d2 = 1/2# Solution-Resistance of wire A,R1 = ρ1l1/A1Resistance of wire B,R2 = ρ2l2/A2Ratio of RESISTANCES is -R1/R2 = (ρ1l1/A1) / (ρ2l2/A2)R1/R2 = (ρ1/ρ2) × (l1/l2) × (d2/d1)^2R1/R2 = (1.62×10^-18 / 4.86×10^-18) × (2) × (1/2)^2R1/R2 = (1/3) × (2) × (1/4)R1/R2 = 1/6 THEREFORE, resistance of wire B is SIX times that of A.Hope it helps...

ndria and chloroplasts are the two ORGANELLES that are double-membrane-bound.Functions of the MITOCHONDRIA:(i) They are the sites for cellular respiration.(ii) They provide energy in the form of ATP for all vital activities of LIVING cells.Functions of chloroplasts:(i) They TRAP SOLAR energy and utilise it for manufacturing food for plants. Hence, they are involved in the process of photosynthesis.pleszz mark as the brainlist

when Iron ROD is connected to the BATTERY it creates the potential difference between the two ends and the FREE electrons in it began to move from one end to other . due to this current is produced in the iron rod and it gives electric shock .HOPE it helps!

уσυ нєℓρ !!!  when SATELLITE is at earth surface thentotal energy = PE + KEPE = -GMm/R     , (KE)i = ?                       (M is mass of earth )TE = (KE)i - GMm/R           .....1                  (R is radius of earth) when satellite escapes from earths gravitational field then it reaches to infinity ...total energy finally = TE = KE + PEPE = GMm/r          ( r is infinity )PE = 0 , (KE)F = ?TE = (KE)f  +  0 = (KE)f   .............2 since energy is conserved so eq 1 equals eq 2-GMm/R + (KE)i = (KE)f   (KE)i  = GMm/R +  (KE)f        .................3from this eq we can see that if (KE)f is 0 then (KE) intial is minimum value of energy should be GIVEN to satellite so that it escapes out...now , (KE)i = mv2/2 ,  (KE)f = 0 , putting these VALUES in eq 3 we getv = (2GM/R)1/2this is the required RESULT...

f = 4mv = 1.5mu =?by mirror formula1/f=1/v+1/u1/4=1/1.5+1/u1.5-4/6=1/u2.5/6=1/u5/12=1/u12/5=uu=2.4 MTHE actual distance of the vehicle is 2.4 mthe SIZE of image of BUS is smaller than busI hope it's helpful MARK me as BRAINLIST

lum is a rod hanging vertically from its top end (or a weight called a bob hanging from a string) that swings from side to side due to the force of gravity. As Italian scientist Galileo Galilei (1564–1642) discovered, the clever thing about a pendulum is that it always takes the same amount of time to make one complete swing. In theory, the only thing that affects how fast a pendulum swings is its length and the strength of gravity.A pendulum works by converting energy back and forth, a bit like a rollercoaster ride. When the bob is highest (furthest from the ground), it has maximum stored energy (potential energy). As it accelerates down toward its lowest point (its midpoint, nearest the ground), this potential energy is converted into kinetic energy (energy of movement) and then, as the bob climbs up again, back to potential energy. So as the bob swings (oscillates) back and forth, it repeatedly switches its energy back and forth between potential and kinetic. Something that works this way is called a harmonic oscillatorand its movement is an example of simple harmonic motion, though we won't go into those THINGS here.If there were no friction or drag (air resistance), a pendulum would keep on moving forever. In reality, each swing sees friction and drag steal a bit more energy from the pendulum and it gradually comes to a halt. But even as it slows down, it keeps time. It doesn't climb as far, but it covers the shorter distance more slowly—so it actually takes exactly the same time to swing. This handy ability (technically called isochronism, which just means "equal amounts of time") is what makes a pendulum so useful for timekeeping.Galileo figured that out straight away and though he never actually managed to build a complete pendulum clock. he came quite close (here's a model of the 1642 pendulum clockhe was designing just before his death); it was left to another brilliant scientist, Dutchman Christiaan Huygens (1629–1695), to finish the job in the 1650s. (Read more about Huygens and his clocks and see a photo of the first Huygens pendulum clock of 1656.)Suppose you want to build a clock from scratch in the simplest way possible with the fewest number of parts. You could start with a dial and some HANDS and move them around the face with your finger, counting seconds to yourself and moving the hands accordingly. You move the second hand once a second, the minute hand once every 60 seconds, and the hour hand once every 60 minutes (3600 seconds). Some clock! That's going to get tedious quite quickly, so what about automating things? You could MOUNT the hands on a little axle driven by what we'll call "timekeeping gears," so that the second hand automatically turns the minute hand at 1/60 of its SPEED, and the minute hand, likewise, turns the hour hand at 1/60 of its speed. Then all you have to do is count seconds, TURN the second hand, and the rest of the job is done for you.But, hang on, that's still pretty tedious. What we really need is some way of powering the hands automatically. You could wrap a piece of string around the axle and attach a weight to it. As the weight falls, it will pull the axle around, turn the second hand, and that will drive the rest of the clock. The only trouble is, the weight is going to fall really quickly and the second hand will whizz around too fast so the clock won't keep time. Okay, let's introduce another set of gears—we'll call them "power gears" (to avoid confusing them with the timekeeping gears)—that will take power from the falling weight and transform it so that, as the weight falls, the second hand advances exactly one position on the dial in one second. But that still won't work because the weight is going to accelerate as it goes down, like any falling object. In other words, the clock is going to get faster and faster until the weight hits the ground with a smack!What we need to add is a mechanism that regulates how fast the weight can fall, allowing the whole timekeeping mechanism to advance so the second hand moves one second on the dial (and only one second) in a time of one second. That's what the pendulum does. As it swings from side to side, it rocks a lever called an escapement that locks and then unlocks the part of the mechanism driven by the falling weight. (Think of it this way: the mechanism is locked and the escapement releases it so it can move—in other words, lets it escape—once per second.) It's this repeated locking and unlocking that makes the tick-tock sound you can hear. Since (in theory, at least) a pendulum of a certain length always takes the same amount of time to swing back and forth, the pendulum is what keeps the clock to time. The escapement mechanism that the pendulum regulates also (cleverly) keeps it moving back and forth by repeatedly giving it a slight nudge—an extra injection of energy to counteract friction and drag.

lysis INVOLVES breaking down ionic substances into simpler substances using electricity.An ionic substance contains CHARGED particles called ions. An ion is an atom that has GAINED or LOST electrons and so carries a positive  or negative charge, which is shown after its formula.Ions with a positive charge have lost electrons, and ions with a negative charge have gained electrons.In electrolysis, the ionic substance must be DISSOLVED in water or melted so that the ions are free to move. In electrolysis, the substance that the current passes through and splits up is called the electrolyte. The electrolyte contains positive and negative ions.

he inderlying principle of a transformer and and obtain the expression of the ratio of the of secondary and prymary voltages in terms of the number of secondary and primary windings and the NIMBER of and primary and secondary WRITE two main ASSUMPTIONS involved in writing the DERIVING the above RELATIONS

g above an Earth on the brink of catastrophic energy wars, scientists test a dangerous device that could provide unlimited power but also runs the risk of creating a terrifying paradox, leaving them face-to-face with a dark alternate reality.Initial RELEASE: 4 February 2018Director: JULIUS OnahFilm SERIES: CloverfieldBudget: 4.5 crores USDProducers: J.J. Abrams, LINDSEY Weberhope it helps!!!❤❤

option CEXPLANATION:          at t=0 a capacitor ACTS as a CONDUCTING wire                      so, use V=IR formula directly                         i.e, 100 = 25 X 10 power 3 x I                              we get , I= 4mA       hope U got it mate..................

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1.length will be UR ANSWER........

(1) A TUBE of narrow bore (i.e. very small diameter) is called a capillary tube. The word capillary is derived from the Latin capillus MEANING hair, capillaris in Latin means LIKE a hair'.(2) If a capillary tube is just partially immersed in a wetting liquid the liquid rises in the capillary tube. This is called capillary RISE. If a capillary tube is just partially immersed ina non-wetting liquid, the liquid falls in the capillary tube. This is called capillary depression. The rise of a wetting liquid and fall of a non-wetting liquid in a capillary tube is called capillarity.

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Explanationwe have to first FIND the velocity of the body at 4 secondsby newtons law v = u + athere u = otherefore v = 2 * 4 = 8 m/sso momentum of body at 4 seconds = MASS * SPEED at four seconds                         = 15 * 8 = 120 kg s / m

It will ERECT and DIMINISHED .6 0.6Hope it HELPS you....

The key DIFFERENCE between infrasonic and ultrasonic WAVES is that infrasonic waves include sounds emitted at levels below frequencies of noise that can be HEARD by humans while ultrasonic waves are those that exceed 20 kilohertz, which is the upper limit of HUMAN noise perceptionExplanation:Please mark as BRAINLIEST

● Answer -Q1 = 1200 μC, V1 = 600 VQ2 = 1200 μC, V2 = 400 V◆ Explaination -When two CAPACITORS ATR connected in series, EQUIVALENT capacitance is given by -C = C1.C2 / (C1+C2)C = 2 × 3 / (2 + 3)C = 6 / 5C = 1.2 μFAs capacitors are connected in series, charge will be same.Q = Q1 = Q2Q = C.VQ = 1.2 × 1000Q = 1200 μCPotential of INNER plate of 2 μF capacitor -V1 = Q / C1V1 = 1200 / 2V1 = 600 VPotential of inner plate of 3 μF capacitor -V2 = Q / C2V2 = 1200 / 3V2 = 400 Vmark me as brainlist...

tion:When a beam of light falls OBLIQUELY at the interface of the two OPTICAL media, direction of its path changes when it enters into the other medium. This phenomenon EXHIBITED by the light rays is called refraction of light. This is due to the change in speed of light while going from one medium to the other.cbse-class-10-science-practical-skills-refraction-through-glass-slab-1During the refraction, when light travels from one medium to another transparent medium, the speed and wavelength of light changes, whereas frequency REMAINS the same.When a light ray travels from rarer to denser medium, its speed gets slow down and the ray bends towards normal (∠i >∠r).When the ray of light travels from denser to rarer medium, its speed goes up and the ray bends AWAY from the normal (∠i < ∠r).From the above two points, we can conclude that the light bends on undergoing refraction.

tion:(1) Mirage:it is an optical illution due to which we see a layer of water at a short DISTANCE in a desert or a road on a hot day.(2) Optical fibre:it is extremely thin and long STRAIN of glass COATED with thin layer material having lower refractive INDEX .Coating of strain is called cladding.Optical fibre work on the principle of tir.When light falls on one end of optical fibre it make an angle greater than the critical angle and suffer tir at each face.After traveling ENTIRE length it comes out from another end.

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t frequency   = 180 khz ,  magnification factor Q  = 289Explanation:Resonant frequency  = 1/2π√LC( ∵ at Resonant frequency XL =  Xc  => 2πfL = 1/2πC   => F =  1/2π√LC)L = 12 MH = 12 * 10⁻³  LC = 65 pF  = 65 * 10⁻¹²  Ff = 1/2π√(12 * 10⁻³ * 65 * 10⁻¹²)=> f =  1/2π√(78 *10⁻¹⁴)=> f =  1/2π√(78 *10⁻¹⁴)=> f =  1/2π 78 *10⁻¹⁴)=> f = 1.8 * 10⁵ => f  = 180 khz the resonant frequency   = 180 khzQ = (Reactive Power/Average Power)Q  = XL/R  =  Xc/R  =  2π fr * L/RQ = (1/R) √L/CQ =  (1/47) √(12 * 10⁻³  / 65 * 10⁻¹² )=> Q = 289 Learn More:For the series LCR circuit shown in the FIGURE, what is the resonance ...brainly.in/question/12780272

erpendicular = 4M and BASE = 3 MNOW, tanA = Perpendicular/Base => tanA = 4/3=> A = tan^-1(4/3) So, the ANGLE will be tan^-1(4/3) ✔I HOPE it will be helpful for you ☺Follow Me ✌

Let the TOTAL DISTANCE be 2D so to cover the first half driver would have taken TIME = Distance/speed= D/vsimilarly time taken in second half=D/V2vnow average speed for the trip total travelled distance/total time taken= 2D/(D/V+D/V2v)=0.85V since there is only ONE option in term of V.Hence choice A.0.85 V is the answer

HiiMay be your answer is "FORCE". that act OPPOSITE of MOVING body .hope it's CORRECT.

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This question can EASILY be solved by PYTHAGORAS theorem.ans.= 13 m5^2 + 12^2 = x25+144 =x169 = x√169 = X13 =x

ng to the Kinetic Molecular Theory, all gaseous particles are in constant random motion at temperatures above absolute zero. The movement of gaseous particles is CHARACTERIZED by straight-line TRAJECTORIES INTERRUPTED by collisions with other particles or with a physical boundary.Hope It Will Help.❤