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oing the experiment the beaker kept near the outermost part of the FLAME(by Ramesh) will get heated in a shorter time.This is because the outermost part of the flame which is blue in colour is the HOTTEST part as here complete combustion takes place . In this zone WAX paper gets sufficient oxygen from the air . Due to complete burning no residue is left on the object that comes in contact with this zone. While the YELLOW part of the candle is not that hot as the outermost part of the candle.Here incomplete combustion takes place.

you have GIVEN the DATA of refractive indexes correctly.  Normally WATER has 4/3 and  glass = 3/2.  You have given the other way ROUND.

diagram.we need to find the acceleration of the pendulum at any position that MAKES an angle Ф with the vertical at the point of support.pendulum length = L.  mass = m.  Le the tension force in the string connected to the pendulum bob be = T. The pendulum is RELEASED from position A.  It moves ALONG the circular arc APG.  At P the direction of movement of pendulum bob is along PF.The pendulum at position P does not move along  OP or PC.  Hence, the forces in this direction are balanced.  The bob moves along PF.         T = m g Cos Ф     - m g Sin Ф = net force acting on the bob at P.      a_t = linear instantaneous acceleration along the tangent to the arc  along PF            = Force/ mass = - g sin ФAs the pendulum is moving in a circular arc, there is a centripetal force on the bob of the pendulum.   Hence there is a centripetal acceleration resulting from it.           a_r = v² / L,    v = tangential instantaneous velocity.In the ideal simple pendulum, there is no loss of energy and the force that gives POTENTIAL energy is the gravitational force.    change in P.E. of the bob when drops from A to P   =  m g BP = m g L Sin Ф   So KE of bob at P = m g L Sin Ф       1/2  m v² = m g L Sin Ф               v² = (2 g L Sin Ф)       Radial centripetal acceleration along PO = 2 g Sin Ф The net acceleration of the bob = √(a_r² + a_t²)                              a    = √[ (-g SinФ)² + (2gSinФ)² ]     magnitude   a = √5 g SinФ   Its direction is given by:  α with the tangential PF, say.       then according to the addition of vectors:                  tan α = (2g SinФ) / [g SinФ + 2g SinФ Cos 90°)                           = 2            so α = tan⁻¹ 2 = 63.43°  with PF.   So the angle between the two accelerations is always 90° and the angle between the resultant and each component of acceleration is always 63.43°  or (90° - 63.43°).  Thus, the resultant acceleration has magnitude √5gSinФ   and is horizontal when α = Ф = 63.43° and that is when the pendulum makes an angle 63.43° with the vertical.======================   the resulting acceleration of the accelerations along PO and PF will be horizontal if their vertical components along PB and PD cancel each other.     component of tangential acceleration a_t along PD =- g sin Ф * sin Ф     component of radial acceleration along PB = 2 g Sin Ф * Cos Ф             Hence, they cancel, if SinФ = 2 Cos Ф   ie.,  Tan Ф = 2    =>    Ф = 63.43 degrees with the vertical OG.   In that case the acceleration will be along PE.

Engine in Thermodynamics:efficiency η = 40%T₁ = 27 degC = 300 °K  = heat sink temperature T₂ = ? = temperature of the heat source  40 % = η = 1 - T₁ / T₂ = 1 - 300 / T₂     T₂ = 300 / 0.60  = 500 °K =  227 °C If the efficiency is increased by 10% to 50 %   Then    1 -  T₁ / T₂ = η = 0.50               T₂  = 2  T₁  = 600 °K  =  327 °CThus the temperature of the source is to be increased by 100 °C  to INCREASE the efficiency by 10 %  for an ideal Carnot MACHINE.

tion is the process by which WATER changes from a LIQUID to a gas or vapor. Evaporation is the primary pathway that water MOVES from the liquid state BACK into the water cycle as ATMOSPHERIC water vapor.

d sound is called noise. A pleasant or sweet sound is called MUSIC. When SOMEONE TRIES to ENJOY very loud music, it can be noise for someone else.

the Ursa major constellation in the sky. The seven stars form a question mark LIKE symbol. It will have 4 stars forming the head part the question mark. TAKE the TWO stars of the 4 stars which are FARTHER from the tail of question mark. Join them by an imaginary line and extend it to north. At a DISTANCE about 5 or 6 times the distance between the stars, you will see a not-so-bright star. It is the pole star. Note that pole star doesn't change its position while stars do. So you can confirm which the pole star is.

grees CELSIUS it MELTS and at 0 DEGREES celsius it FREEZES

he STUDY of electromagnetic force which is a physical interaction that occurs between ELECTRICALLY CHARGED PARTICLES.

al physics  deals with macroscopic particles and macroscopic quantities.  LIKE the objects we can see , FEEL, deform etc.. The size of the objects is more than a 100th of a millimeter or so.. Quantum physics deals with quantities and particles of the size of atoms and molecule and the SUB atomic particles like proton, electron , neutron etc.The physics and properties of particles of the size of nanometers and less is quite different from that of macroparticles that we can see with eyes.  These particles have dual nature - wave like nature and particle like nature.  Also these particles have high velocities like electrons when in MOTION.  The classic physics principles of velocity, force, momentum, mass do not apply directly.  The theory of relativity applies to these particles.Quantum mechanics or physics or quantum theory are all referring to the same science subject.  In quantum mechanics, the physical quantities like energy, mass, charge etc. exist in discrete quantities.  They are not continuous.  There is an Uncertainty principle that the mass and velocity or position cannot be determined exactly or 100% correctly.  There a constant called Plank's constant DENOTED by h.  The order of masses, energies of particles is supposed to be in that range.

ter vapor condenses, it becomes COOLER and into water.  There is a lot of heat stored in steam. When it  condenses, it changes the PHYSICAL state to liquid.  the latent heat of VAPORISATION that is stored in side the steam is released to the surroundings.so the surroundings GET WARMED up.

cells each of EMF  "E" are joined in parallel, to form a single BATTERY,the potential difference across the terminals of all the batteries will be "E".All negative terminals are CONNECTED together.  All positive terminals are connected.Hence, the EQUIVALENT emf = "E".The current yielding capability of the equivalent battery will be 4 TIMES that of 1 battery.

essure P (= stress = Force/Area) is applied on the surface of the cube, it is compressed. The compression is DUE to elasticity.  Let Y be the YOUNG's modulus of elasticity of the material of the cube.When the cube is HEATED,  it EXPANDS due to increase in temperature.  Let α be the coefficient of thermal expansion of the material.  Let L be the side of the cube.   Y = Stress / Strain       = P / (ΔL / L)   ΔL = compression = P L / Y    ΔL = α L T  Hence,  α L T = P L / Y           =>  T = P / α Y

of the soap bubble= 0.02 m ∛ ⇒Surface tension of the soap solution=0.03N/m ⇒Let us find the surface AREA. so , ⇒surface area = 4(π) r² .⇒=4×22/7×(0.2 )² ⇒No .of surface area of the soap bubble = 2 ( OUTER and inner area ) ⇒Surface area is GIVEN as TΔS per surface ⇒Let us NEXT find the total surface area =2 (TΔS) ⇒E = 2 ×0.03 × 4×22/7 × (0.2 )² Joule.....is the ans.

eThe man carries the box up above to a higher ALTITUDE.  The potential ENERGY of the box increases.  This INCREASE in energy comes from the work done by the man.  HENCE the work done is POSITIVE.The displacement of the box is in the direction of force exerted by the man on the box  - upwards.  Hence, the product of the force and displacement is positive.  Hence the work is positive.

water at 20 ⁰ C and 50 gms of water at 40⁰ C are mixed.  Since the masses of the liquid at different temperatures are same, the answer is very EASY and simple :  average of 20⁰C and 40⁰C.  that is:  30⁰C.=====================final temperature of the mixture =      = [ m1 * T1 + m2 * T2 ] / (m1 + m2)     = [ 50 gms * 20⁰ C + 50 gms * 40⁰C ]  / (50+50)     = 3,000 / 100 = 30⁰C====================another way using specific heats :   let the final temperature be = T ⁰C   Amount of heat given out by the hot water = m * s * (40⁰C - T)           = 50 gms * s* (40 -T)   Amount of heat TAKEN in by the cold water = m * s * (T - 20⁰C)       = 50 gms * s * (T - 20 )   As the amounts are equal, because the heat is transferred from hotwater to the cold water without any loss of heat to any surroundings,           50 * s * (40 -T) = 50 gm * s  * (T-20)                  40 - T = T - 20             2 T = 60    => T = 30⁰C=============================

ultant velocity of RAIN drops will be the vector SUM of the rain drop speed (vertical)  and  the HORIZONTAL wind speed.the magnitude of the result velocity of the rain drops =       √(12²+35²)  = 37 m / secthe direction of the resultant velocity vector with the vertical       = tan ⁻¹ (12/35) = 18.92 deg.The umbrella should be pointed in the direction opposite to the resultant velocity of the rain drops.  So it should be in the direction  18.92 deg. inclination to the vertical  opposite to the direction of wind., towards East.or,  71.08  deg. with the horizontal (East)  towards the vertical.

boiling WATER at 100° C  (not VAPOUR)  COOLS to water at 0°C.Heat TRANSFERRED = 1 gm * 4.1813 joules/°K /gm  * (100° C - 0°C)       = 418.13 Joules

k DONE on the box by the man is ZERO as the force ACTING on the box is at an angle of 90,, and such a force means 0 or no WORK. If it was said that 'what is the work done by the man on climbing the stairs' then it would be positive as the man is gaining height thereby gaining potential energy. But in this case the work done is ZERO.

ics , Heat capacity is the amount of heat required to raise the TEMPERATURE of a GIVEN MASS of a substance or material by one degree.

pplied by you = 10Nlength of key = 5cmso force arm for you = 5cmlet resistance offered by LEVERS of key = Fdistance of levers = 1cmso force arm for lever = 1cmBalancing the moments,10N × 5cm = F × 1cm⇒ F = 50NSo resistance offered by the levers of the LOCK is 50N.

V = 67.2 litres  of Helium  at  STP     ΔT = 15⁰K1 mole of an ideal gas occupies 22.4 litres at STP.  So number of moles of Helium gas  n = 67.2/22.4 = 3we know that      γ = ratio of specific heats for an ideal MONO atomic gas = 5/3    C_p = heat capacity at constant pressure for a mono atomic gas = 5/2 R        C_v = heat capacity at constant VOLUME for a mono atomic gas = 3/2 R   Change in internal energy = n C_v ΔT                                           = 3 * 3/2 * 8.31 J/mol/°K  * 15°K                                         = 560.925 Joules There is no change in the volume and hence no work done in heating the gas by 15 DEG.   Heat supplied = change in internal energy                         = 560.925 Joules

tial VELOCITY = 5 m/sec    is in the upward direction a = - 10 m/sec²                is in the down ward direction.  so it is negative.when the stone reaches the maximum height, its velocity v = 0 m/sec.  Then it starts to fall BACK  on the ground. equation of motion:     v² = u² + 2 a s           0 = 5² - 2 * 10 *  s             s =  25/20 = 1.25 meters          v =  u  +  a  t           0 =  5  -  10 * t              t  =  0.5 seconds

Amp V = 220 VoltsElectric iron has a resistance = R  V = I R       => R = V / I = 220 / 3.4                = 64.7  Ω     When the electric iron is connected to a 110 Volts supply,       I = V / R = 110 / 64.7 = 1.7 Amp.================Alternately,  As the voltage BECOMES  HALF of its value, the current becomes half of its value, as  the current is directly proportional to the potential difference ACROSS a conductor or a resistor.    This is as per Ohm's LAW.

gram.Let K = 1/(4πε) = 9 * 10⁹ N-m²/C²The forces F1 and F2 on the charge at Q are along the sides AB and AC.        magnitude of F1 = F2 = K * 2 * 10⁻⁶ * 3 * 10⁻⁶ / 0.20²                                         =  1.5 * 10⁻⁸ K NewtonsTheir COMPONENTS along the horizontal directions are  equal to F1 COS 60° and F2 Cos 60° which are equal in magnitude and opposite in direction. They cancel.Their components along AM will add to :         2 F1 Cos 30° = 2 * 1.5 * 10⁻⁸ * √3/2 * K  newtons  = 1.5√3 *10⁻⁸ K  NewtonsLet the charge placed at M be q Coulombs.  AM² = 0.20² - 0.10² = 0.03 m²Force due to q on charge at A will be along MA:  F3             F3 = K q * 2 * 10⁻⁶ / 0.03 = 6.667 q K * 10⁻⁹  Newtons   For the charge at A to be stationary,      6.667 q K * 10⁻⁹ = 1.5 √3 * 10⁻⁸ K             q = 3.897  Coulombs  positive charge.

er to sip HOT TEA with a saucer rather than a cup it is because the saucer has LARGE surface area compare to the cup,so the hot tea cools FASTER in the saucer.

n function of the earth wire is to conduct the LEAKING current  from the electrical appliance to the ground . It is conected to the OUTER METALLIC body of the appliance .It is necessary to earth metallic appliances , as it PROTECTS the user from electric shocks by TRANSFERRING the current to the earth.

tric motor is an electromechanical DEVICE that converts electric ENERGY into mechanical energy.          Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to GENERATE force.The reverse process,PRODUCING electrical energy from mechanical energy is done by generators such as an alternate or a dynamo.Some electric motors can also be  used as generators,for example,a traction motor on a vehicle may perform both tasks.Electric motors and generators are commonly REFERRED to as electric machines.

Earth = Macceleration due to gravity on surface of Earth = gmass of satellite = maltitude of satellite above Earth's surface = hEarth's radius  = Rdistance of satellite from CENTER of Earth = R + hFor any satellite to go around in a circular orbit, there should be a CENTRIPETAL force that MAKES it go around in a circle.  For a satellite, this force is supplied by the gravitational force of attraction (Newton's law). let v = linear velocity of satellite ALONG the circular orbit.Option C.Actually the orbit is an elliptical orbit with very small deviation from circle.  However, for a simple SOLUTION, we assume it as a circular orbit.

f sound in thin long solid bars is given by   Young's modulus for rubber Y = 4 * 10⁶ N/m² and  density ρ = 1.2 or so.   Speed of sound in rubber using the above formula =  57.7 m/sec. This is much SMALLER than the speed of sound in air, which is 340 m/sec at atmospheric pressure/Temperature.   For vulcanized rubber the Young's modulus Y = 2.8 * 10⁶ N/m² and the density = around  920 kg/m². So speed of sound = 55.1 m/sec.    Vulcanized rubber is even softer than rubber.  So the pressure CHANGES in it, due to sound waves are not much. The particles in vulcanized rubber do not VIBRATE or oscillate as fast as in other solids or in air.      Sound propagates only if the particles of the media oscillate. Then there are pressure differences that propagate.  Vulcanized Rubber particles are very soft and they compress and expand side ways. They absorb some pressure from the sound waves. The VIBRATIONS of the particles is not perfect and elastic. It is reduced as compared to hard solids   Hard metallic objects, if you hit it, it vibrates for a long time.  Soft objects like rubber regain their shape back quickly and STOP vibrating quickly.  That property is the one that makes velocity of sound more in hard metals and less in rubber.

lomb's law of force between two electrically charged particles :          q₁ , q₂ = electric CHARGES on the two particles.            r = distance between two particles = 0.1 m       the particles are assumed to be point SIZED.          Force F = 18 N          q₁ + q₂ = 9 μ C    --- (1)   SOLVE the two EQUATIONS to get the values of charges.      q₁ (9 - q₁) = 20      q₁² - 9 q₁ + 20 = 0        (q₁ - 5) (q₁ - 4) = 0       q₁ = 5 μ C  or  4 μ C       q₂  = 4 μ C  or  5 μ C

V*Q [ VOLT into coulomb]for 118 volt W = V*Q    = 118 * 2    =236 joulefor 128W = V*Q    = 128 * 2    = 256 joulework done for 118V to 128v is = 256 - 236                                             = 20 joule

that s = ut + 1/2at²According to QUESTION, u = 0 [As it was in REST]; a = 3ms⁻² ; t = 8ss = 0 x 8 + 1/2 x 3 x 8 x 8S = 3 x 4 x 8s = 96mHope that helps !!

अतीशय वाईट आळ घालने.,नाळ तुटने.

tion:In chemistry, the VALENCE or VALENCY of an element is the measure of its combining CAPACITY with other atoms when it forms chemical compounds or MOLECULES.

plz MRK as brainliest Explanation:One of the major roles of the lungs is to facilitate gas exchange between the circulatory system and the external environment. The lungs are composed of branching AIRWAYS that terminate in respiratory bronchioles and alveoli, which participate in gas exchange. Most bronchioles and large airways are part of the conducting zone of the lung, which delivers gas to sites of gas exchange, in alveoli. Gas exchange occurs in the lungs between alveolar air and blood of the PULMONARY capillaries. For effective gas exchange to OCCUR, alveoli must be VENTILATED and perfused. Ventilation (V) refers to the flow of air into and out of the alveoli, while perfusion (Q) refers to the flow of blood to alveolar capillaries. Individual alveoli have variable degrees of ventilation and perfusion in different regions of the lungs. Collective changes in ventilation and perfusion in the lungs are measured clinically using the ratio of ventilation to perfusion (V/Q). Changes in the V/Q ratio can affect gas exchange and can contribute to hypoxemia.

re's Ur Answer ⬇️⬇️Lightning RODS INTERCEPT this voltage, providing a safe path for lightning current into the ground. They do not DECREASE the likelihood your home may be struck, but provide a DIRECT path to ground, preventing damage to your home from fire, explosion, and electrical surges that can result from lightning strikes.Hope it's helpful U ⤵️Follow Me Mark Me As Brainlist PLEASE

o is the opening section of a PIECE of MUSIC, USUALLY before the singing begins.there are many meanings of intro. this is one among them. hope this is the intro MEANING your asking for