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e is oscillating according to the equation. , where t is in second. The point moves from the position of equilibrium to maximum DISPLACEMENT in TIME [CPMT 1989] A) 4.0 sec.

tance between TWO consecutive crests is 3 cm=> WAVELENGTH (L) = 3cm============================Ripples cover a DISTANCE of 25.2 cm in 1.2 SEC=> wave velocity = distance/time = 25.2/1.2 = 21 cm/s===========================velocity = frequency × wavelength=> frequency = velocity / wavelength=> frequency = 21/3 = 7 HzThus,wavelength = 3cmfrequency = 7 Hzvelocity = 21 m/s

sion in STRING is T. HORIZONTAL component of tension is BALANCED by electrostatic force of repulsion.or, ....(1)and vertical component of tension is balanced by weight of ball.or, ......(2)from EQUATIONS (1) and (2), from diagram, so, or, here it is clear that y is directly proportional to r³ or, R is directly proportional to y⅓ so, or, hence, answer is

rial Radiation – Onceinsolation is absorbed by the Earth'ssurface, it EVENTUALLY gets re-radiated BACK into the atmosphere or into space. ... B. Some of this infraredradiation is trapped by gases in the atmosphere. This helps to heat the atmosphere and the planet. Thiseffect is CALLED the GREENHOUSE effect.

w=FSCOSTHETA as.its moving along the x axis so theta is 0 all the forces SUPOSE summesion of f where all the forces will be TAKEN as fcosthetaas you are moving in ACCELERATION s=ut+1/2at^2put them in the equation and you can FIND WORK dome by the object

ement is the SHORTEST distance COVERED by a body!In a circular path the chord b/w the initial point and the FINAL point will give you the displacement!!Displacement for a COMPLETE rotation of that circular path is ZERO!!Hope this helps!!BE YOURS =_=

:PRESSURE = force / area Given  :Force = 50 NPressure = 25 N/m²Calculate the area 25 N / m² = 50 N / area = > area = 50 N / 25 N / m²= > area = 2 m²ANSWER :The area is 2 m²

lating MATERIAL which has the EFFECT of increasing the CAPACITANCE of a vacuum-filled PARALLEL plate CAPACITOR, when it is inserted between its plates, is called a dielectric material, and the factor by which the capacitance is increased is called the dielectric constant of that material

es of BALMER SERIES are FOUND in VISIBLE part of spectrum.hope it helps you MARK it brainliest

now that WORK done = Force × displacementThen as given Mass = 200 KGACCELERATION due to gravity = displacement = 6 mThen work done = 200 × 10 × 6 = 12000 Joules .HOPE it HELPS you

the ALTITUDE at which the ACCELERATION.

the Mass of TRAIN is more than that of the car, when they are MOVING at the same speed the FORCE REQUIRED to stop the train is much more than compared to that of the car.

ion of a Nonpolar Molecule. ... When atoms bond together to form molecules, they SHARE or give ELECTRONS. If the electrons areshared equally by the atoms, then there is no resulting CHARGE, and the molecule is nonpolar. .....Polar molecules are the opposite and have a POSITIVE or negative charge....hope it helps.....mark as brainliest

ne to stop a car = kinetic energy of the car .Formula Kinetic energy = 1/2 × m v²Given :Mass ( m ) = 1500 kgvelocity ( v ) = 72 km/hrK = 1/2 m v²   = 1/2 × ( 1500 kg ) × ( velocity )²Hold on !72 km/hr should be CONVERTED to m/s72 km = 72000 m1 h = 3600 s72 km/hr = 72,000 / 3600 m/s= > 20 m/sNow : K = 1/2 × 1500 × ( 20 )² J= > K = 750 × 400 J= > K = 3,00,000 JANSWER :The work DONE is 3.0 × 10⁵

A BUDDY ❄❄❄✨ YOUR ANSWER ____________⏩ it is a motion which is repeated identically after a fixed interval of time after which particle repeats its position is called as time periodfor example - REVOLUTION of earth around SUN is periodic in nature. ____________☣ hoPe it hEplS ️❤

the time of landing and take off Aircraft TYRE UNDERGO huge friction with the ground surface.this creates Large AMOUNT of charge and can destroy it.To reduce this effect these tyres mad up of CONDUCTORS thus MAKING a spark and dissipate the charges.

ve mirror would be best SUITED for use in a solar cooker because it reflect and FOCUS the sunlight at a point. The temperature at that point increases which heats and cooks the FOOD placed at that point.

═══════════════╕☬‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌‌‌ ‌ ‌ ‌ ‌ ‌ YOUR ANSWER ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ☬╘═════════════════════╛Velocity = Displacement/Time Also we KNOW , v= dx/dt = can also be EXPRESSED as V= ds/dts---->is displacement.╒══════════════════════╕☬‌ ‌ ‌ ‌ ‌ THANKS! ‌@Brainlyconquerer ‌ ‌ ‌ ‌☬╘══════════════════════╛

the IMAGE but not SURE about it...... LET me KNOW in the comment this helped you or not

═══════════════╕☬‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌‌‌ ‌ ‌ ‌ ‌ ‌ YOUR ANSWER ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ☬╘═════════════════════╛A= F ;B= F R = F so ANGLEX = we have to calculate...R = √A² + B² + 2ABcosx F = √F² + F² + 2FxFcosx= F√2(1+cosx)1=2(1+cosx)cosx= -1/2 = cos 120°so answer is 120°╒══════════════════════╕☬‌ ‌ ‌ ‌ ‌ THANKS! ‌@Brainlyconquerer ‌ ‌ ‌ ‌☬╘══════════════════════╛

refractive index of the LIQUID is GREATER than that of the lens then concave lens will turn into CONVEX and convex into concave

lecule freezes the DISTANCE of its MOLECULES decreases as the force of attraction INCREASES. HOPE it helps you.

vitational Force. Gravity ACTS as an attractive force between any TWO objects that have mass. ... For EVEN more mass, such as in planets and stars, the force of gravity is strong enough to keep them in orbit. Gravity is LIKE the electromagnetic force in that it acts at a distance, theoretically out to infinity.

e Electrode: - It is the electrode    which CONNECTED to the POSITIVE TERMINAL of the battery. It is also KNOWN as Anoda.                                      Negative Electrode:- it is the electrode which is connected to the negative terminal of the battery. It is also known as cathode.

decreases KINETIC ENERGY becuz it OPPOSES the relative motion between two OBJECTS.

annah❤❤here's UA ANSWER : atmospheric pressure: the pressure exerted by AIR is KNOWN as atmospheric pressure.....pressure:the force ACTING on a unit area of surface is called pressure pressure=force/area on which it acts HOPE IT HELPS UH

am starting with the Laws of the stretched string :Laws of stretched string ⇒ The frequency of the string is inversely PROPORTIONAL to the length of the string .f ∝ 1 / l⇒ The frequency of the string is DIRECTLY proportional to the square root of the time PERIOD .f ∝ √t⇒ The frequency is inversely proportional to the square root of mass of the string .f ∝ 1 / √mHence f ∝ √t / ( l × √m )f = ( 1/2 √t ) / ( l × √m )More laws :⇒ The string if PLUCKED in the middle vibrates in one loop. The vibration is called principal note .⇒ The string if plucked at different ends produce different MODES of vibration.⇒ If l is the length of the string , then the different modes of vibration of the string if plucked at 2l , 2l/2 , 2l/3 will be 3 : 2 : 1 .

T OF PRESSURE IS BAYRE (Ba)SI UNIT OF PRESSURE IS PASCAL (PA)1PA = 10 Baratio = Ba/Pa=Ba/10Ba =1/10= 1:10

A BUDDY ❄❄❄✨ YOUR ANSWER ____________⏩ to PROVE its periodicity we will have to prove SIN WT = sin w(t+T)let sin wt = y1and y2 = sin w(t+T) 0= sin (wt + wT) = sin ( wt + 2π) = sin wt = y1hence Y1 = y2____________☣ HOPE it hEplS ️❤

tion is a type of vaporization  that occurs on the surface  of a liquid  as it CHANGES into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other. When a molecule near the surface ABSORBS enough energy to overcome the vapour pressure, it will "escape" and enter the surrounding air as a gas. When evaporation occurs, the energy removed from the vaporized liquid will reduce the temperature of the liquid, resulting in evaporative cooling.Sublimation  is the transition of a substance directly from the solid  to the gas  phase, without passing through the intermediate liquid  phase. Sublimation is an endothermic process  that occurs at temperatures and pressures below a substance's triple POINT  in its phase diagram, which corresponds to the lowest pressure at which the substance can exist as a liquid. The reverse process of sublimation is deposition  or desublimation, in which a substance PASSES directly from a gas to a solid phase. Sublimation has also been used as a generic term to describe a solid-to-gas transition (sublimation) followed by a gas-to-solid transition (deposition).Crystallisation is the (natural or artificial) process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals FORM are precipitating from a solution, freezing, or more rarely deposition  directly from a gas. Attributes of the resulting crystal depend largely on factors such as temperature, air pressure, and in the case of liquid crystals, time of fluid evaporation.

deviation of a beam of light INCIDENT obliquely on a GLASS SLAB

n :-From a balloon rising VERTICALLY upwards at 5 m/s a stone thrown up at 10 m/s relative to the balloon . Its velocity with respect to ground after 2 s ISANSWER :-Use the formula from laws of motion :v = U + atGiven :Velocity of balloon w.r.t to ground = 5 m/sVelocity of stone w.r.t to balloon = 10 m/sSo : the initial velocity ( u ) = 10 m/s + 5 m/s                                             = 15 m/sHere a = g = 10 m/s^2 [ acceleration due to gravity ]Here a is acting downwards and hence is NEGATIVE .Now t = 2 sv = u + at= > v = 15 - 10 × 2= > v = 15 - 20= > v = - 5 m/sAnswer :The velocity will be 5 m/s downwards .

this MUST B the REQUIRED ANSWER. 1:3

cubical wooden BLOCK of specific gravity s1 floats in a liquid of specific graave to calculate depth of wood under VITY s2 as shown .the ATMOSPHERIC PRESSURE is p0 .find 1.) Force exerted on the face Ad 2).the force exerted on face BCFirst we have to calculate depth of wood under water. The depth of surface AD under liquid is the pressure at depth h under water.We have weight of wood block = wt of the liquid dispersed.  W₁ x L³ = W₂ x L² x h h = W₁ x L / W₂Pressure under depth is m x g x h      P AD = W₂ x g x h              = W₂ x g x W₁ x L / W₂     P AD = g W₁ LNow F AD                = g W₁ L x L²          Force on AD = g W₁ L³The upper surface BC exposed to atmosphere So force = pressure / Area Force on BC = P₀ / L²

onPure iron:- is a term used to DESCRIBE new iron produced in an electric arc furnace where temperatures sufficient to melt the iron can be achieved.Wrought ironWrought iron:- is a form of COMMERCIAL iron which has very low carbon content (less than 0.10 %), less than 0.25 % of IMPURITIES consisting of sulphur, phosphorus, SILICON and manganese. Percent total iron :-‘Fe T’ is the total iron in a sample, including metallic iron and iron CHEMICALLY combined with other elements such as oxygen.Fe T = (weight of iron/weight of sample)*100Percent metallic iron:-  ‘Fe M’ is iron chemically uncombined and as cementite (Fe3C).Fe M = (weight of metallic iron/weight of sample)*100

nd on the moon will not move as there is no ATMOSPHERE so there is no material MEDIUM for PROPAGATION of sound

a TANGENT GALVANOMETER, the CURRENT through the coil is directly proportional to the tangent of the angle of DEFLECTION of the needle. Due to this characteristic of the galvanometer is known as the tangent galvanometer. Knowing k and θ we can calculate the value of the current through the coil.

×5Dp = 149.6 MILLION km×5Dp= 748 million KMK =T²/R³R³ = T²(149.6 million km)³= T²Square root both SIDES(149.6 million km)²= Tit's the period of revolution of EarthThen period of revolution of PLANET(748 million km)³ = T²Square root both sides(748 million km)² = TIt's the period of revolution of planet