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64201.

What is the process of Lava Lamp? Is the object expanding or contracting?

Answer»

In a liquid motion lamp, the heat usually comes from a LIGHT bulb. The HEAVIER liquid absorbs the heat, and as it heats up, it expands. As it expands it BECOMES less dense. Because the liquids have very SIMILAR densities, the formerly heavier liquid is suddenly LIGHTER than the other liquid, so it rises.HOPE IT HELPSHAVE A GREAT DAY!!!

64202.

Is star fixed at a point​

Answer» YA STAR is FIXED at a POINT
64203.

What is the frequency of vibration in sonic vibration

Answer»

between 20 Hz to 20,000 HzThe RANGE of frequency of AUDIBLE or sonic VIBRATIONS is between 20 Hz to 20,000 Hz.Explanation:like it frds ###

64204.

Draw the ray diagram for the convex mirror when the object is placed in front of it on the principal axis

Answer»

PleaseExplanation:SEE the ATTACHMENT

64205.

A child top is spun with angular acceleration numerical

Answer»

I am not UNDERSTANDING the QUESTION

64206.

The lamp consumes 1000J of electrical energy in 10s.What is its power?

Answer»

100 wattExplanation:if the LAMP CONSUMES 1000J energy then it MUST produce a WORK output of 1000j as energy cannot be destroyed.ThenP=w/t=1000/10=100

64207.

Two mirrors are placed at rightangles...Find A..​

Answer» TELL me PROPERLY the DIGRAM
64208.

How is myopia corrected

Answer» MYOPIA and HYPERMETROPIA are both easily corrected at Optical Masters using prescription glasses or contact lenses specifically designed to counteract the effect. For myopia, a concave lens (MINUS powered) is placed in front of a MYOPIC eye, moving the image BACK to the retina and clarifying the image.
64209.

2. When spring is compressed its potential energy (a) remains constant(c) reduces(b) increases(a) nothing can be said about it​

Answer»

(C)REDUCESExplanation:BECAUSE ITGETS CONVERTED TO KINETIC ENERGY TO BOUNCE SO,AS A RESULT IT REDUCESPLS MARK AS BRAINLIESTHOPE IT MAY HELP YOU.

64210.

A car accelerates uniformly in a straight line from 10 m/s to 20 m/s in 5 seconds. What is the acceleration?

Answer» ACCELERATION= CHANGE in speed/timea=20-10/5a=10/5a=2m/s^2
64211.

If air and clouds were good conductors of electricity how does lightning occur

Answer»

nIf air and CLOUDS were good conductors of ELECTRICITY how does lightning occurExplanation: the FRICTIONAL force between two clouds make LIGHTING with THUNDER

64212.

Find the ratio of two copper wire X and Y

Answer»

1:1Explanation:

64213.

What do you mean by persistence of vision ?​

Answer» MAGE is formed on the retina it stays for about 1/16th of a second. This is known as persistence of vision. The movie that we see in TV, cinema etc work on this PROPERTY of eye. If consecutive successive still images of a running DOG are flashed before our EYES, we see it as a movie of a running dog.Hope it helps you.
64214.

Name the capital of chalukyas​

Answer» BADAMI is CAPITAL of CHALUKYAS HOPE it HELPS you
64215.

Why Current Is A Scalar Quantity ?​

Answer»

tion:current is a SCALAR quantity it REPRESENTS the direction of FLOW of positive charge but still it is a scalar quantity because the current flows in the in the law of scalar ADDITION not in the law of VECTOR addition Mark me as brainliest

64216.

Water eddy current in short​

Answer»

tion:An EDDY is a CIRCULAR current of water.The swirling motion of eddies in the OCEAN cause nutrients that are normally found in colder, deeper waters to come to the surface. Here, PHYTOPLANKTON (TINY ocean plants) feeding on these nutrients color the water beautiful shades of blue and green.

64217.

SE I. Choose the correct option for the following s1. Waves of light are(a) non mechanical and longitudinal waves.(b) mechanical and longitudinal waves.(c) non-mechanical and transverse waves.(d) mechanical and transverse waves​

Answer»

(C) non-mechanical and TRANSVERSE waves.Mark as a BRAIN LIST

64218.

A metal cube of mass 460g and density 2.7g/cm cube is suspended half immersed in a liquid og density 0.8g/cm cube using a thread. Find the tension in the thread.

Answer»

Tension = 3.84N Explanation:since ' a ' = 0=> F net external = 0=> weight of cube = tension + UPTHRUST weight = mg 460g = 46/100 KG => weight = 46g/100 N VOLUME = mass / density density = 2.7 G/cm^3 = 2700 kg/m^3=> volume of cube = 46/270000 m^3ATQ; volume of SOLID submerged = 1/2 x 46/270000 m^3Upthrust = volume of solid submerged x density of liquid x g => U = 1/2 x 46/270000 x 800 x g=> U = 184g/2700 N Tension = 46g/100 - 184g/2700= 1058g/2700Taking g as 9.8 m/s^2Tension = 1058*9.8/2700= 3.84 newtons ( approx.)

64219.

Aakash package solutions physics dual nature of matter

Answer» DOWNLOAD EXPLANATION:from aakash.ac.in
64220.

The diameter of cylinder is (21.4±0.05)mm and its length is (2.54±0.1)cm and mass is (75.54±0.02). determine the density of cylinder and its percentage uncertainty.

Answer»

the ANSWER is here223786Explanation:VOLUME of CYLINDER =πr^2h=22/7 X (21.1_+5)^2 x (2.54_+0.1)=3.14 x 44521+211+25 x 2.54+0.1=3.14 x 44521+236 x 2.55=3.14 x 44757 x 2.55=5.007 x 44757=5x44757=223786

64221.

Area under velocity time curve gives

Answer»

displacement Explanation:AREA MEANS PRODUCTS of given TERMS

64222.

Is distance change in position?

Answer»

may and may notExplanation:because as standing at same distance and CHANGING position by ROTATING at same place the distance is not changedas we CHANGE position that is changing the distance to the initial distance the distance will be changed

64223.

Can someone please send me the gold leaf electroscope and earthing diagram I will mark them as brainliest for sure!!!☺️

Answer»

is WOULD HELP you PLZ MARK as the BRAINLIEST

64224.

No mass is possibly for any object having speed of light Then how photons mass exists? Is speed of photon less than the speed of the light? ​

Answer» YES the SPEED of PROTON is LESS than speed of LIGHT
64225.

E=mV ^2(1-M2 /m2) Where M =moving mass m=rest mass of an object V=speed of an object E=mc2 Prove this relationship ​

Answer» C is the velocity of the moving objectExplanation:so it's provedThat E is the energy of the moving object,M is the mass of the object ,And C is as MENTIONED above.So E=mc^2.And energy is DIRECTLY PROPORTIONAL to mass
64226.

5. Two stationary sources each emitting waves of wave length 1. An observer moves from one source toother with velocity u. Then number of beats hearedby him :-​

Answer» TION:PLEASE please mark me as the brain list ANSWERI I will follow you BRO
64227.

A satellite is revolving around the earth in a circular orbit with critical velocity 7 kilometre per second find the radius of the orbit of the satellite and period of revolution​

Answer»

how PLEASE EXPLAIN the PROCESS of CALCULATIONS

64228.

A jet areoplane covers 3300 km in 5 hours . Calculate its speed

Answer» DISTANCE = 3300 kmTime = 5 hrsSpeed = distance/time            = 3300/5 km/hr            = 660 km/hrHence, the SPEED of JET aeroplane is 660 km/hr
64229.

A boy is pulling a cart in a level road with a force of 20N with the help of a rope, making an angle of 30degrees with the ground level. Find the horizontal and vertical component.

Answer» TION:F_X=F*COS 60 =2000*0,5=100 NF_y =F*sin 60... are HORIZONTAL and vertical COMPONENTS of the force . if the angle the force makes with board is 30 DEGREES
64230.

Triangle law for Vector addition​

Answer»

→R=→A+→BExplanation:To obtain →R which is the RESULTANT of the sum of →A and →B with the same ORDER of MAGNITUDE and direction as shown in the FIGURE.

64231.

Write any 2 difference between beam and ray of light.​

Answer»

a beam is a GROUP of ray of light and a ray is a SINGLE PART from COMING from source of the light

64232.

Precautions to be taken in determining relative density of a solid

Answer»

tion:Precautions:1.Always used a thread of least weight and volume to TIE the solid BLOCK.2.The solid block should be DRIED before measuring maas and volume3.The indicator of the spring balance should be at zero before measuring the mass of the solid.4.The solid block should be completely immersed in water of the measuring cylinder before observing its volume.5.While immersing the solid block, the water of the measuring cylinder should not spill.6.The solid block should not TOUCH the brim and sides of the beaker.7.Always NOTE reading of lower meniscus of water level.

64233.

Explain the terms in weight w=hpag​

Answer» TION:Gravitational definitionThe most common definition of weight found in introductory physics textbooks DEFINES weight as the FORCE exerted on a body by gravity. This is often expressed in the formula W = mg, where W is the weight, m the mass of the OBJECT, and g gravitational acceleration.
64234.

Fill in the blanks ( question1) At sunsets or sunrise The............scattered colour light from the sun reaches our eyes

Answer»

MoleculesExplanation:“Because the sun is low on the horizon, SUNLIGHT passes through more air at sunset and sunrise than during the day, when the sun is higher in the sky. More atmosphere means more molecules to scatter the violet and blue light away from your eyes. ... This is why SUNSETS are OFTEN yellow, orange, and red.”Hope this will help you!!

64235.

Explain the Kepler law​

Answer»

tion:Kepler's LAWS apply: First Law: Planetary ORBITS are ELLIPTICAL with the sun at a focus. Second Law: The radius vector from the sun to a planet sweeps equal areas in equal times. Third Law: The ratio of the square of the period of revolution and the CUBE of the ellipse semimajor AXIS is the same for all planets.Hope this will help u

64236.

Explain the law of conservation of energy​

Answer» MASS can neither be created or destroyed in a chemical reaction.some energy may be WASTED during CONSERVATION but the TOTAL energy remains CONSTANT
64237.

What is difference between evaporation,boiling, vaporization

Answer»

means to heat up any LIQUID up to its BOILING POINT.Evaporation means the CONVERSION of liquid to gaseous state at any temperature.Vapourization means the conversion of liquid to gas at a temprrature higher than its boiling point.

64238.

Write any 2 difference between mercury thermometer and alcohol thermometer.​

Answer» BEXPLANATION:PL*zzzzzzzzzzzzz☺
64239.

What is echo find the experience for time to obtain an echo

Answer» TION:the REFLECTION of SOUND is CALLED an ECHO.
64240.

Give the time period is wave is 1.5sec .find its frequency

Answer» EXPLANATION:frequency=reciprocal of TIME period                 =1/t                  =1/1.5                  =0.67hope it HELPS !!MARK BRAINLIEST!!!!
64241.

19. Det Distinguish between uniform and non-uniformTotions, giving an example of each.How do you determine the average speed ofbody in non-uniform motion ?Define the term weight and state its S.I. unit.20. How are the units of weight, kgf and newtrelated21. State three differences between mass and we22. Which quantity : mass or weight, does not chby change of place ?23. State which of the quantities, mass or wealways directed vertically downwards.​

Answer»

tion:uniform MOTION = in which object cover EQUAL DISTANCE in equal TIME of intervalnon-uniform motion=in which object cover unequal distance in equal time of interval

64242.

Answer both the question urgently. OnlyQ6,Q7​

Answer»

e ,ANSWER 6 = (b) Transpiration Because transpiration have no use in carbon cycle whole others are somehow dependent on carbon Answer 7 = P = MV where p stands for momentum m stands for mass v stands for velocity ( it is also the general FORMULA ) Hope you find it helpful!!Do mark it as brainliest!!

64243.

Explain the history of electromagnetism ?

Answer»

A theory of electromagnetism, known as classical electromagnetism, was developed by various physicists during the period between 1820 and 1873 when it culminated in the PUBLICATION of a TREATISE by JAMES Clerk Maxwell, which unified the preceding developments into a SINGLE theory and discovered the ELECTROMAGNETIC ...hope it helps mark me as brainliest

64244.

State and explain coulombs law? find the force between two point of 0.2 AM​

Answer»

MARK AS BRAINLIST COULOMB's Law. Coulomb's law is the law of electrostatic force between electric charges. It is the most important law of electrostatics. From previous page we already know that the charges are of two types that is positive and negative. We also know that opposite charges attract each other and same charges repel each other. This interaction of attraction and repulsion gives rise to a force. This force can be attractive or REPULSIVE, depending on whether the charges we have are of opposite or same in type.So we use Coulomb's Law to measure the amount of electrostatic force acting on the charges. We also use it to find the direction of the force.One more important point to note here is about the range of these forces. These forces ACT over an enormous range. Its range varies from nuclear dimensions (10−15m i.e. of the order of Fermi) to macroscopic DISTANCES as large as 108m. The inverse SQUARE law is valid to a high degree of accuracy over this range of separation.

64245.

Which advanced wireless security measure allows a network administrator to keep sensitive data secure as it travels over the air in a wireless network?

Answer» WER Is EncryptionExplanation:Encryption is used to secure PLAINTEXT data that would be viewable TRAVELING over a WIRELESS network.brainliest if this HELPS you <3
64246.

What do you understand by internal resistance and terminal potential difference of a cell? on what factors do they depend​

Answer»

The internal resistance of a [battery] cell will DEPEND on : the cell chemistry (what the PLATES and electrolyte are composed of) the temperature (internal resistance INCREASES at lower temperature as ion mobility REDUCES) ... the number of charge/discharge cycles of a RECHARGEABLE battery.

64247.

Which type of lens is used to construction of microscope why

Answer»

convex lense is USED to CONSTRUCT a MICROSCOPE because it enlarges the SIZE of IMAGE

64248.

A student uses spectacles of focal length - 2-5 m.(a) Name the defect of vision he is suffering from.(b) Which lens is used for the correction of this defect?(c) List two main causes of developing this defect.(d) Compute the power of this lens.​

Answer»

(a) since it is -2 - 5 m. THUS, he is suffering from MYOPIA(b) CONCAVE lens is used to CORRECT this defect.(c) i-excessive curvature of cornea. ii-elongation of EYEBALL.(d) the power of this lens is - 0.5 - 0.2d

64249.

Diaw We rest position of the latti A uniform rod 2 m long has masses of 40 g and 60 g at its ends.If the mass of the rod is 50 g, where will it balance?​

Answer» TION:cjfkjgkkhlxhhhklggguio
64250.

Current sensitivity of galvanometer is inversely proportional to

Answer»

cureent in the wire EXPLANATION:as the CURRENT is carried in GALVONMETER it fluctuate