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e  velocity of sound in a experiment increases by 61 cm/s for EVERY 1°C.Explanation:v ∝ √TTo covert °C to Kelvin, we get use the below FORMULA:T (K) = t°C + 273The velocity of sound at 0°C, we get,v ∝ √(0 + 273) → (1)The velocity of sound at t°C, we get,v₁ ∝ √(t + 273) → (2)Now, on dividing equation (1) and (2), we get,v₁/v = √(t + 273)/(0 + 273)v₁ = v + (v × t)/546We know that, the speed of the sound in air at 0°C is:v = 332 m/sv₁ - v = (332 × t)/546v₁ - v ≈ 0.61 × t m/sWhen t = 1°C, the speed of the sound is:v₁ - v ≈ 0.61 m/s = 61 cm/sHence it is mathematically proved.

dkckskckxkzkfExplanation:kdkdkfkfdkf

tantheta=μstan30=μs1/=μsPlease MARK it BRAINLIEST

Acoustics is the SCIENCE of of sound related to the designing of buildings to reduce echos.Echos could be reduced by having CURTAINS, CARPETS and other SOFT materials

Newton's Law of Cooling states that the rate of change of the temperature of an object is proportional to the difference between its own temperature and the ambient temperature (i.e. the temperature of its surroundings).Law of CoolingWith T (t) being the temperature of an object at a certain timet being the time in secondsTs being the temperature of the surroundingsT0 being the starting temperature of the objectand k being the cooling constant.Explanation:Verification....We can EXPERIMENTALLY verify this law with a spherical calorimeter (a laboratory device that is used to measure the quantity of heat transferred to or from an object) filled with hot water. The calorimeter has mass m and specific heat capacity s and the hot water has mass m1 and specific heat capacity s1. Using the calorimeter we measure the amount of heat energy lost as the temperature of the water and calorimeter falls from temperature T0 to temperature T1 after a set time. As the temperature drops, the temperature is noted for every 30 SECONDS for a set time. Graphing the change of temperature versus the change in time gives US a cooling curve that we can use to CALCULATE the rate of cooling.After calculating the rate of the cooling curve, we find that the rate of cooling is proportional to the difference between the temperature of the object and the temperature of the surroundings, verifying Newton's Law of Cooling.HOPE IT HELPED..IF THIS WAS USEFUL MARK IT AS BRAINLIEST....

the HEAT CAPACITY of the BODY is 60 JK-1

by the PARTICLES PRESENT in AIR by PROCESS of DIFFUSION

meter of the image of the sun FORMED by the mirror 2fθGiven:Diameter of the sun = dFocal LENGTH of mirror = fThe subtend angle = θ radianExplanation:The distance between sun and mirror is basically infinity.∴ u = ∞Now, on USING mirror law, we get,-1/f = 1/v + 1/uOn substituting the given values, we get,-1/f = 1/v + 1/∞-1/f = 1/v + 0-1/f = 1/v∴ -f = vThe 'negative sign' indicates real, inverted and diminished.The sun subtends an angle θ radian at the pole, we get,θ = r/fWhere, r is RADIUS of IMAGER = θf∴ d = 2r = 2fθ

Explanation:The effect of UPTHRUST is that WEIGHT of the body immersed in a liquid appears to be less than its actual weight. There are two factors on which upthrust depends - Volume of the body and DENSITY of the Liquid. LARGER the volume of body submerged in liquid, greater is the upthrust.

due to the ELECTROSTATIC FORCE that connects the positive to negative charge causing lightning to OCCUR. it usually occurs in summer

e the features MAINLY present in COCKROACH for respirationtrachea is also in HUMANS for air passage and spiracles are holes present at SIDE of the BODY of cockroach

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al energy PER unit mass possessed by water at a point where the pressure is 0.1x10% N/m², VELOCITY 0.02 m/s and height of water level from the GROUND  10 cm is equal to 10.9802 J/kgGiven: Pressure = P = 0.1 × 10⁵ N/m² Velocity = V = 0.02 m/sHeight = h = 10 cm = 0.1 mDensity of water = ρ = 1000 kg/m³Acceleration due to gravity = g = 9.8 m/s²The total energy per unit mass is given as the sum of pressure energy per unit mass, kinetic energy per unit mass and gravitational potential energy per unit mass.T.E = P/ρ + ( v² ) + (gh)

kinetic energy=1/2×mv2so take ratio of kinetic energies of both MASSES as:129/5=5/1×(v1/v2)2since we are taking ratios between the two bodies,we would compare the formulaand in the formulae,1/2 is common for both the bodies.So,1/2 gets cut off=>129/5×1/5=(v1/v2)2 underroot 129/25=v1/v2 11.35/5=v1/v2 so,ratio between VELOCITIES of both bodies is 11.35:5 HOPE it helped....

The radioactive DECAY law is an universal law that describes the STATISTICAL BEHAVIOUR of a large number of NUCLIDES.

tion:It occurs whenever a magnetic FIELD and an electric CONDUCTOR MOVE relative to one another so the conductor crosses lines of force in the magnetic field. The current produced by ELECTROMAGNETIC induction is greater when the magnet or coil moves faster, the coil has more turns, or the magnet is stronger.

The nuclear force is a force that ACTS between the protons and NEUTRONS of atomsIt is ATTRACTIVE in nature but with a repulsive core. That is the REASON that the nucleus is held TOGETHER without collapsing in itselfThe range of a nuclear force is very short. At 1 Fermi, the distance between particles in a nucleus is extremely small.

Rate of change in ELECTRIC flux is GIVEN asExplanation:Let the charge at any moment of time on the plate is given as QSO the electric FIELD between the plates is given asnow we havenow we haveso we haveNow we haveso we haveso we have#LearnTopic : Displacement Currentbrainly.in/question/15726521

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g=GM/R^2 =6.67×10^-11×6×10^24/6.4×10^2=9.89 m/s^2

0.100 nmExplanation:Wavelength 1.227 / 150 ^ 1 / 2 = 0.100 NM = 1 ANGSTORM

Sir Isaac NEWTON MADE important contributions to SCIENCE in three areas: mathematics, optics and physics. ... In mathematics, Newton developed differential calculus. This made it possible to calculate areas within a shape that had curved SIDES. PERHAPS Newton's greatest discoveries came in the field of physics.

E=hr(r=frequency)    =H X c/λ    =6.626 x 10^-34 x 3 x 10^8 x 4000 x 10^-10  =19.878 x 10^-34/40   =0.49655 x 10^-34 MPLEASE MARK me brainliest

Half TIME of a radioactive SUBSTANCE is the time taken for half the NUCLEI PRESENT to disintegrate

no. of MOLECULES in 9gm H2O=nie 9÷18×6.022×10^23=n mass of CO2=44given mass=44mole=given mass÷massmole=44÷44molecules =MOLE ×NAmolecules=1×6.022×10^23molecules in terms of n are =2N

path length:The actual DISTANCE COVERED by a body/object is CALLED path length of the body/object. It is SIMILAR to distance.Displacement:The shortest distance between the end POINT and start point of the path length of a body/object is called displacement.

lightning strikes help dissolve unusable nitrogen in water ,which then creates a natural FERTILIZER that PLANTS can absorb through their roots .Lightning also produces OZONE , a vital gas in atmosphere that help SHIELD the planet from rays of harmful ULTRAVIOLET sunlight .

Magnetic FORCES and electric forces are two forces that occur in nature. Electric forces are the forces that occur DUE to electric charges WHEREAS magnetic forces are the forces that occur due to magnetic dipoles. ... There are two types of electric charges. They are positive and negativeplease follow me and MARK it as brainliest ANSWER

A p–n JUNCTION is a boundary or interface between TWO types of SEMICONDUCTOR materials, p-type and n-type, inside a single crystal of semiconductor.Explanation:SORRY mate I can't answer in one word but this is the shortest definition I had........hope it helps

ESTION ✪✪||The rear side of a truck is OPEN and a box of mass 20 Kg is PLACED on a truck 4 metre AWAY from the open end.ü= 0.15g=10m/s²The truck starts from rest with an acceleration of 2m/s² on a straight road. At what distance the box will fall off the truck from the starting point ?|| ✰✰ ANSWER ✰✰ ||Given That :- → m = 40 kg→ a = 2 m/s²→ μ = 0.15→ d = 4m. Here, net force acting on the box is given by,Net Force = Force DUE to speed of truck - Frictional force→ Fnet = Fx - Ff→ Fnet = ma - μmg→ Fnet = 40×2 - 0.15×40×10→ Fnet = 80 - 60→ Fnet = 20 NNet acceleration = Fnet/m→ a' = 20/40 = 0.5 m/s²So ,TIME required for box to fall off :- s = ut + 1/2 a't²→ 4 = 0×t + (1/2)×0.5×t²→ 4 = 0.25t²→ 4 = (1/4)t²→ t² = 4 * 4 → t = 4 seconds. So, After 4 seconds The box will Fall of The Truck and ,,Distance travelled by truck in 4 s :- → s' = ut + 1/2 at²→ s' = 0×4 + (1/2)×2×4²→ s' = 0 + 4²→ s' = 16m . Hence, The Truck will travel 16m before box falling off.

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Hey Bobby❤️Explanation:here is your answer The Cernot CYCLE can be thought as most effeciemt heat engine cycle allowed by physics laws.In order to approach the Cernot effeciency the process involved in the heat engine cycle must be reversible and INVOLVE no chance to entrophy.the Carnot cycle is the most efficient cycle of operating between two specific temperature limits but it is not a suitable model of POWER cycles .Limitations of Carnot cycle1.The working fluid at 3 is in both liquid and VAPOUR state it is difficult to compress two phase mixture isentropically2.practically it is not possible to neglet friction between piston and cylinderderivation of the EQUATION of efficiency we know that QH = RTh ln (v 2/ v1)QL = RTl ln (v3/ v4)the effeciency of Carnot cycle isprocess 1process 2 and 3 we have the all of the entire engine is reversinle so we write bobby