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I thinkdensity=0.4 is the ANSWER...

now I am SORRY

THE CORRECT ANSWER IS ACCELERATION BECAUSE A MOVING THING IS MOVING ON A SAME SPEED IS POSSIBLE BUT IN 4 OPTION THIS IS POSSIBLE IN ACCELERATION ONLY LEFT THREE OPTION IS NOT POSSIBLE THEY HAVE TO MORE OR LESS THE SPEED

95Explanation:HOPE it HELPS U REFFER the ATTACHMENT

done w = potential difference V × CHARGE q .....3by ohm's LAW , V = IR .....1q =It ......2substitute 1,2 in 3w= V × qw= IR × Itw= L2 ( I square) Rt ACCORDING to joules law ,W= H,I 2 (i square) Rt

the PRINCIPLE of floatationExplanation:

ज़ब्स्ण्डजसज्जजशस्जक्सन्सन्समक्सन्सनज़्जष्कद

I have TRIED to SOLVE... I HOPE this will HELP you...

a) 1718.75 N/m^2b) 3437.5 N/m^2Explanation:The girl's weight in the above given problem is 550N. As we KNOW that weight is the force with which earth attracts every body towards itself. So, F=550N.Now, the contact of one of her feet with the ground has the area of 160cm^2.Converting 160cm^2 to m^2 , we get 0.16m^2.To find the PRESSURE we apply the formula of: Pressure = Force applied/ AREAA) So, if the girl is STANDING on two of her feet, then the area covered will be double. Therefore 0.16×2 = 0.32 m^2.So, Pressure= 550/0.32 = 1718.75 N/m^2b) Now, when the girl stands on one of her feet, the area covered is 0.16m^2.So, Pressure = 550/ 0.16 = 3437.5 N/m^2

tion:wide wooden SLEEPERS are placed below the RAILWAY tracks so that the pressure exerted by the rails on the ground becomes LESS. therefore, increase in area decreases the pressure .

The AMOUNT of current which makes the heater element very HOT but the CONNECTING wires slight warmer is because of the high resistance of heater element.The amount of hotness the passing current will produce, depends on the resistance of the conductor and also on the time.Since the resistance in connecting wire is much less than the heater element, it gets SLIGHTLY warm.

tion:The buoyant force is extracted from the fluid's pressure on the surface. Because the pressure increases as the distance increases, the pressure at an object's bottom is ALWAYS greater than the force at the top-hence the upward force of the net. WHETHER the object floats or FALLS, there is the buoyant force.As the mass of the solid object becomes more and more IMMERSED in the liquid, so does the upward ' buoyant force. ' The buoyant force acting on the solid reaches peak and remains constant AFTERWARDS when the object is completely immersed in the water.

because argon PREVENTS the evaporation of TUNGSTEN filaments , GIVING it BULB a LONG life.Explanation:

heat produced by the elctric current depend on current(i) and rrsistance (R) and TIME (t)Explanation:H = i SQUARE RT

we can GET ANSWER by LOOKING at NATURE

!ṧ !ℵ ᾰ♭✺ṽḙ ᾰттᾰḉℏՊḙℵт❤.❤

gt 2 At 2t ,s= 21 g(t/2) 2 = 41 ( 21 gt 2 )s= 41 HTherefore, the height from ground is GIVEN by,x=H−s=H− 41 H= 43 H

1/100 centuariesExplanation:

Magnetic intensity is B = Explanation:In this question We have been given thatValue of the magnetic field is  0.34\times  10^{-4} T Deflected at an angle 30° So, we can find the value of magnetic intensity vector quantity pertaining to the condition at any point under the magnetic influence like an electric CURRENT, or an electromagnetic wave measured by the FORCE exerted on a vacuum upon a FREE unit NORTH pole placed at the point.magnetic intensity B =                                  B =                                  B =  HENCE, Magnetic intensity is

as we know that a projectile motion is a COMBINATION to horizontal and verticle motion.The vetical component of intial VELOCITY ‘u’ ALWAYS remains constant ,i.e. in this case ,ux=ucoso, throughout the motion.So change in momentum in horizonal direction is 0(zero).Now analysing the VERTICAL direction motion we know intial velocity in vertical direction uy=usino.After time t,vy=usino-gt,(USING eq. of motion ,v=u+at)Thus, Change in momentum in vertical direction =m.vy-m.uy =m.(usino-gt)-(m.usino)=-mgtif it is correct pls follow and thank me and also put it as brainliest

e ratio of times to attain the same speed is 1 : 4Explanation:  VELOCITY for mass 1 kg = v  1 Taking velocity for mass 4 kg = v2Given that e1  = e 2 Equating the above terms and simplifying, we GET, Now the momentum is given by:Momentum for mass 1 kg = P1  Momentum for 4 kg mass = p2 P1  = 1 × v  1 ​and P 2  =4 × v 2Then P1 / P2 = 1 / 4 = 1 : 4Thus the ratio of times to attain the same speed is 1 : 4​

The heating element of the heater is made up of alloy which has very high RESISTANCE. So, when current flows through the heating element, it becomes too HOT and glows red DUE to heating EFFECT of current. But the resistance of cord which is usually of copper or aluminium is very low so it does not glow.Hope this will help u PLZ MARK IT BRAINLEIST!!!

Aãl fùzäßExplanation:

he question is incomplete as the diagram is not provided, the diagram has been attached for the above given question.ANSWER:A boy noted an electric meter reading on SUNDAY and MONDAY at 8 am in the morning. The electric meter reading was taken at his home.a) On Sunday the electric meter reading taken was 42919.b) On Monday the electric meter reading taken on Monday was 42935.c) So, the AMOUNT of electricity used from Sunday to Monday can be calculated by subtracting the two meter readings ( 42935-42919) = 16 units.d) The increase in 16 unit has occured in a day (24 hours), that is from Sunday 8 am to Monday 8 am.e) For 1 unit, COST of electricity is Rs 5. For 16 unit, cost of electricity is Rs 16×5 = Rs 80.

It increases Explanation:Becoz TEMPERATURE is directly PROPORTIONAL to RESISTANCE

ⓛⓝⓘⓝⓖenergy of INCIDENT Photon ,E = hc/ lemda = 1242eV nm/ 300nm= 4.14 EV electron will be knocked out of the hydrogen ATOM if :-E > 13.6 eV electron will go to First excited state if :-E > energy of first excited state .so electron will keep orbiting in the ground state of atom .❤.❤

meaning of rushed , labelled , casually elegant, viability obstacles , , explore admist , ,CONFESSED , invigorate ,bit by bit argument ACCUSED , stagnant , clung ,HEFTY , hoarse , excessive BREEDING plz tell all meaning

40Explanation:thisbis the CORRECT ANSWER BECA

dfùê át lañçeExplanation:

Since the above given question is incomplete as the table is not provided, so the table in detail has been provided below:The table below shows the current in three different electrical appliances when connected to the 240 V mains supply :Appliance Current Kettle 8.5 A Lamp 0.4 A Toaster 4.8 AANSWER:a) Since current PASSED is inversely proportional to the resistance of the conductor, so the greatest resistance is possessed by the lamp.b) i) Due to excessive heating melting down of wire might occur, as large amount of current is drawn by the kettle.ii) Earthing system is required to MAINTAIN safety of a current conducting device which is not here.c) To calculate power, we APPLY the formula :P= VIP = 240 × 8.5 = 2040 Wd) To calculate the power supply at 120V , we find the value of R [V^2/P], which is = 28.23 ohm [ 240^2/2040]Now, I= V/R So, I = 120/28.23 = 4.25 amp

It will CONSUME more electricity Explanation:BECOZ ELECTRICAL ENERGY is inversely proportional to length

It is OVAL in shapeExplanation:I THINK so

because gravity DEPENDS on the mass of objects. the mass of the EARTH is more than the STONE so, stone is ATTRACTED towards the earth

Explanation:power is how MUCH energy is transfered in a secondpotential DIFFERENC is also called as voltage sopower= current*voltage(b) Resistance=voltage/current=3/0.5=6 OHMS(II) power= I*V=3*.5=1.5W

al difference : 230 vcurrent : 0.4 Arate at which ENERGY FLOW = ? Energy = POWER , power = POTENTIAL difference × current so, P = 230 × 0.4 = 92

when DROPPED simultaneously in non vacuum region the COIN will touch the GROUND FIRST as acceleration due to gravity will act more due to more mass.but when dropped in vacuum both of them will REACH the ground in same time as there will be no acceleration due to gravity and so mass should not be considered

we dont notice the forces because the forces between tiny OBJECTS [almost everything is tiny when compared to the size and mass of the Earth] is EXTREMELY negligible ie too small to take into consideration.hope it HELPS and PLS MARK as brainliest:)

nked picture is of fourth question3.Given: OBJECT distance =u=-30cm(by sign convention)V=?height of object be =H cmheight of image=- 3h cm(real image)h=-v/um=height of image/height of object⇒-3h/h = -v/uh3=v/u⇒v=uX3∵u=-30cmwe get v=-30x3=-90cmNegative sign indicates that image formed is real and inverted at a distance of 90cm from mirror... 4.virtual image will be formed behind the concave mirror if the object is placed between pole and focus of the mirror.The follwing figures explain the formation of images in a convex mirror when the object is placed in different positions in FRONT of it.●its figure is being attached at the starting