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udent,◆ Ionisation ENTHALPY -It is the minimum amount of energy required to remove the valence electron of an isolated neutral gaseous atom or molecule.# TREND in ionization enthalpy -Usually ionization enthalpy increases from left to right in a perioddecreases from top to bottom in a GROUP◆ Lower ionization enthalpy. -(i) Mg or NANA < Mg because ionization enthalpy increases from left to right in a period.(ii) Li or O Li < O because ionization enthalpy increases from left to right in a period.(iii) Br or FBr < F because ionization enthalpy decreases from top to bottom in a group.(IV) K or BrK < Br because ionization enthalpy increases from left to right in a period.Hope this helps you...

udent,(i) Mg or Ca ATOMIC size increases down the group, hence Ca has LARGER radius than Mg. (ii) Li or Cs Atomic size increases down the group, hence Cs has larger radius than Li. (iii) N or P Atomic size increases down the group, hence P has larger radius than N. (IV) B or AlAtomic size increases down the group, hence Al has larger radius than B.Thanks dear. Hope that helps you...

tion:The elements of S BLOCK and P block except 18th GROUP elements are called as Representative elements because they are FOUND in nature abundantly .It can be said because these elements are the most parts of compounds found in nature .We don't count 18th group elements because they are free-living elements. they are the elements of zero group in S block HYDROGEN inch found which is the part of WATER and water is found everywhere on the earth.hence we can say the elements of S block and P block are the Representative elements .

when base REACTS withh METAL to FORM salt and hydrogen gasexample- SODIUMHYDROXIDE + ZINCATE to form hydrogen gas and Sodiumzincate

the DISTANCE of the SECOND BALL is 6dExplanation: PLEASE refer to the text material.

-1by2 is the INTEGRATION of COS2XDX

velocity which is in straight LINE is know as linear velocity and the velocity which is in circular path is known as angular velocityExplanation:as there is no ANGLE formed by moving OBJECT in linear path ..but in circular path angle is formed by object..that's why they are known as angular and linear velocity

ball is launched as a projectile with initial speed V at an angle θ above the horizontal. Using conservation of energy, FIND the maximum height HMAX of the ball's flight. Express your ANSWER in terms of v, g, and θ.I am doing:12mv2v2hmaxhmaxhmax=mghmax+12m(vcosθ)2=2ghmax+(vcosθ)2=(v2−(vcosθ)2)/2g=v2(1−(cosθ)2)/2g=v2sin2θ2g

re many practical uses of Joule HEATING: An incandescent light bulb glows when the filament is HEATED by Joule heating, due to thermal radiation (also called blackbody radiation). Electric fuses are USED as a safety, breaking the circuit by melting if enough current flows to melt them.

3Explanation:f=10*K=10*3 so it is SOLVED that k =3

53° or 37 °Explanation: as the TRANGLE LAW

YesExplanation: MARK it as the BRAINLIEST

your QUESTION MATE ?

here is your ANSWER.....

the STARS MOVE because of the PRESENCE of gases INSIDE themExplanation:this is true

tion:1)Gather your tools.[1] This extremely basic sundial is a great way to explain the concept with very little planning. All you need to create it are a few simple items found in your backyard. These tools are a straight stick (about two feet long), a handful of pebbles and a wristwatch or cell phone to tell the time.2)Find a sunny area to plant the stick.[2] Look for a place that gets full sun exposure all day long. Push one end of the stick into the grass or earth. If you live in the Northern HEMISPHERE, slightly slant the stick toward the NORTH. If you live in the Southern Hemisphere, slight it slightly toward the South.[3]If you don’t have access to a grassy area with SOFT earth, you can improvise.Fill a small bucket with sand or gravel and plant the stick directly in the center of it.

which LESSON BUDDY PLS TELL

aExplanation:principle quantum NUMBER gives size of the orbit as r(N)=0.53×n^2÷Z . energy of nth orbit as _13.6×Z^2÷n^2

eld RETAINED Bohr's first orbit, and added one elliptical orbital to Bohr's SECOND orbit, and two, three, four and so on to Bohr's third, fourth, fifth orbits and so on RESPECTIVELY. So, Two elliptical orbits were added by Sommerfeld to Bohr's third orbit. The purpose of adding elliptical orbits was to account for splitting of spectral lines in HYDROGEN spectrum. Though, Bohr - Sommerfeld model of atom failed to explain spectrum of atoms with more than one electron, It provided us with two quantum numbers, PRINCIPAL quantum number discovered by Bohr, Azimuthal quantum number discovered by Sommerfeld. Also, There were 5 different series of spectral lines observed in Hydrogen spectrum, namely - Lyman series, Paschen series, Balmer series, Brackett series, Pfund series.

a spectrum of electromagnetic radiation TRANSMITTED through a substance, showing dark lines or BANDS due to absorption at specific wavelengths.The SAMPLE absorbs energy, i.e., PHOTONS, from the radiating field. The intensity of the absorption varies as a function of frequency, and this variation is the absorption spectrum. Absorption spectroscopy is performed across the electromagnetic spectrum. ... The transmitted energy can be USED to calculate the absorption.

metal+base-----salt+hydrogen GAS

peed=total dist / total timeTotal distance=2+2=4kmTotal TIME =time home to market +time market to home=2/4+2/60.83Avg speed =4/0.83=4.8kmperhour2)AVG vel=0 since total DISPLACEMENT is 03)in 30 min the boy travelled 2km =4kmperhourIn40 min he travelled 2+1=3kmAvg speed=3/1.5=2kmperhour

460Explanation: K E = 1/2MV^2K E = 400IN GRAPH ONLY UPPER AREA IS GOING TO BE ADDED THEREFORE 60+400=460

The acceleration of the falling magnet will be less than acceleration due to gravity. ... This flow of CURRENT will be induced in such a way that it will create a magnetic field which would OPPOSE the change and will RESULT in an upward force acting on the bar magnet and hence decreasing the acceleration of the FALL.

Explanation:1.the magnification of a CONCAVE mirror is +2 2.this means that the image is VIRTUAL...3.virtual image is formed i.e the image can"t be CAUGHT on screen4.it is ERECT what is magnification?the ratio of height of object (ho) and to the the ratio of height of image (hi) is the magnification.its denoted by letter "m"hi/ho = -v/u.....>>if magnification is +1 its a plane mirror.>> if the magnification is less than 1 its virtual,erect,diminshed..

5NExplanation:Acceleration=g-aA=5m/s^2T=mAT=1×5T=5N

laieyrbgExplanation:

acceleration = INITIAL velocity -final veloctiy/ timea= v-u/ya=0-40/10a=-4 hope it's helps you it may be wrong ALSO plz confirm with your FRIENDS first...

dgdExplanation:

fExplanation:

tion:The precautions to be TAKEN are as follows :-1)go to an OPEN area or a big park.2)do not get inside a building.3)do not get inside a CROWDED place.4) stop where you are.5)do not stand under tree as if the earthquake is powerful the tree will fall on you.

they will not ATTRACT each otherExplanation:

fExplanation:

take a CARDBOARD box. one SIDE should be open. make two holes on the top.take a marker pen and THREAD and tape and for SEISMOGRAPH.

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In this question,The process of re-emission of absorbed light in all directions with different INTENSITIES by the ATOM or molecule is called SCATTERING OF LIGHT. SELECTIVE scattering (or Rayleigh scattering) by air MOLECULES give rise to the blue skies on a clear Sunny day.  Another type of scattering called Mie Scattering is responsible for the WHITE appearance of clouds.