This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 951. |
Ignore hindi means |
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Answer» नज़रअंदाज़ करना nazarandaaz karana Explanation: |
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| 952. |
An object is placed 100cm from the plane mirror. The mirror is moved 25cm towards the object. How does the image shift from its original position? |
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Answer» Answer: 50 cm Explanation: because when the MIRROR move TOWARDS the object then the PLACE of the object is move DOUBLE the distance in the mirror so the mirror MOVED 25 then the object moves double the distance in the mirror so 50cm |
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| 953. |
A car accelerate from 18km/hr to 36km/he in 10 second.calculate acceleration and express in km/hrs and m/s |
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Answer» Answer: Acceleration= change in velocity /time Change in velocity =36 - 18=18 km h=5 m/sec Time = 5sec Acceleration =5/5=1 m/se Equation of motion, s= UT +(1/2) at2 U= 18 km/h =5m/sec T=5sec A= 1m/sec S= (5*5) + (1/2*1*5*5) S= 25 + 12.5 i. E s= 37.5 m Explanation: I HOPE it's hellpfull |
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| 954. |
If 20500 newton is applied on 50 square cm, calculate the pressure |
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Answer» = 20500/50 |
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| 955. |
Answer the following Questions:-1. Suggest two methods to find out wind direction at a given place,2. State two experiences that made you think that alr exerts pressure.3. You want to buy a house. Would you like to buy a house having windows but no ventilators?Explain your answer.4. Explain why holes are made in hanging banners and hoarding5. How will you help your neighbours in case cyclone approaches yourvillage/town? 6. What planning is required in advance to deal with the situation created by a cyclone? |
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Answer» Answer: 1. Suggest two methods to find out wind direction at a given place. Solution: Methods to finding out the wind direction at a given place are as follows i. By seeing the direction of dry leaves released in the air. ii By seeing the direction in which it is DIFFICULT to ride the bicycle. 2. State two experiences that made you think that air exerts pressure (other than those given in the text). Solution: i. When we fill the air in the balloon, it becomes tight and if we try to fill more air balloon will get burst which proves air exerts pressure. ii. Wind causes curtains, doors and windows to move with the direction of the wind. This demonstrates air exerts pressure. 3. You want to buy a house. WOULD you like to buy a house having windows but no ventilators? Explain your answer. want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.Solution: It is not a good idea to buy a house without ventilators because warm air is lighter than cold air hence warm air passes out of your home through ventilators. Accordingly, without ventilators, warm air will not pass out, and the house will remain warm. 4.Explain why holes are made in hanging banners and hoardings.why holes are made in hanging banners and hoardings. Solution: Holes in the banners and hoardings helps air to pass through it. Hence banner can withstand the pressure of the air and hence remains intact. 5.How will you help your neighbours in case cyclone approaches your village/town?will you help your neighbours in case cyclone approaches your village/town? Solution: We can help our neighbours in case a cyclone approaches, by any of the following measures: By helping them shift to a safer place. By helping them to shift their animals, necessary households and vehicles to a safer place. By calling emergency services such as fire station, police and medical centres. 6. What planning is required in advance to deal with the situation created by a cyclone? What planning is required in advance to deal with the situation created by a cyclone? Solution: We should not IGNORE the warnings issued by the meteorological department through TV, radio, or newspapers. We should — make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places; Avoid driving on roads through standing WATER, as floods may have damaged the roads. Phone numbers of all emergency services like police, fire brigade, and medical centres should be handy. Always store drinking water for emergencies. Do not touch wet switches and fallen power lines. Do not pressurise the RESCUE force by making undue demands. Cooperate and help your neighbours and friends. Explanation: Hope this will help you :) |
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| 956. |
Ill follow the person, mark him as brainliest and etc etc pls solve Q2 fast |
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Answer» Answer: hope it HELPS you, UWU sorry for bad handwriting if you can't UNDERSTAND |
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| 957. |
What are rotational motion?? |
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Answer» Answer: Plz,if it is CORRECT plz rate ⭐me,LIKE me and follow me and mark me as brainlist Explanation: Rotation around a FIXED axisRotation around a fixed axisDescription:Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a SPECIAL case of rotational motion. The fixed axis hypothesis excludes the POSSIBILITY of an axis changing its orientation, and cannot describe such phenomena as wobbling or precession. |
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| 959. |
The movement of an object is called ________. |
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Answer» ❤Answer The movement of an object is called Motion. Mark as BRAINLIEST..........❤❤ |
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| 960. |
By splitting into primefactors find the square root of 11025 |
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Answer» 1764 = 2 X 2 x 3 x 3 x 7 x 7. Therefore, √1764 = 42. Therefore, √4356 = 66. 11025 = 5 x 5 x 3 x 3 x 7 x 7. |
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| 961. |
Why we slip if we step accidently on a banana skin? |
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Answer» Banana peel being smooth and slippery REDUCES the friction between the sole of our SHOE and the surface of road because of this we slip easily... HOPES it help you✌️✌️ |
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| 962. |
Sumit covers a distance of 2.4km from his house to reach his college on a scooter with speed 6m/s. Calculate the time taken by him to reach the college. |
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Answer» distance covers by SUMIT =2.4km speed=6m/s 2.4 multipled by 6m/s =14.4 he took 14.4 mins |
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| 963. |
By mistake, your mother added two extra spoons of sugar to a cup of tea. She realized her mistake at onceand did not want to throw it away. What could she do? |
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Answer» Explanation: |
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| 964. |
A sledge has mass 15 kg. A horizontal pull of 25 N will just move the sledge when it is on a horizontal surface of compacted snow. a) Draw a diagram showing the forces acting on the sledge, modelled as a particle, when it is just on the point of sliding on this horizontal surface. b) Find a value for , the coefficient of friction between the surfaces. pls help me fast. ill mark him/ her as brainliest and other things |
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Answer» The diagram given below shows the FORCES acting on the sledge when it is just on the point of sliding on the horizontal surface. This diagram is called the free body diagram of the sledge, from which we can find out that,
The sledge experiences no vertical motion, hence the net vertical force acting on it is zero. Thus from the diagram, Taking If the horizontal pull makes the sledge just move over the surface, then its magnitude should be equal to the frictional force acting on it. This also means the net horizontal force acting on the sledge should be zero. So from the diagram, Let So (2) becomes, From (1), |
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| 965. |
Why can't we see atoms with naked eye |
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Answer» Because there very TINY particles Explanation: |
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| 966. |
17. What is a prism? |
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Answer» Answer: Prism is a solid OBJECT with ends that are parallel and of the same SIZE and shape, and with sides whose opposite EDGES are equal and parallel. PLZZ...MARK ME AS BRAINLIEST... |
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| 967. |
2. A car is running at a speed of 60 km/h. How much time will it take to cover a distance of 270 km? |
Answer» ❤AnswerSpeed of car = 60 km/hr Distance cover by car = 270 km Time taken by car = ❓ Time = Distance/time = 270/60 = 4.5 Mark as BRAINLIEST........❤❤ |
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| 968. |
If a car is moving with a speed 5km/hr then find the distance travelled by the car in 10hours. |
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Answer» Answer: As we know, speed = 5 km/h time = 10 hrs distance = 5 X 10 = 50 kms HOPE it will help you. |
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| 969. |
The symbol of all units is written in (a) singular (b) plural (c) both options a and b (d) none of these |
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Answer» (d) NONE of these Explanation: PLEASE MARK me BRAINLEAST |
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| 970. |
What happens when someone commits a crime? |
Answer» They are ARRESTED, booked, and PLACED in custody. After that, they are taken before the COURT for ARRAIGNMENT.HOPE IT'S HELP YOU ❤❇ |
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| 971. |
.if 20 Newton of force is acting on a rectangular surface of length 20 cm and 30 cm then find the pressure |
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Answer» <P>Solution: Given,
To find, ___________________________ Firstly finding area of rectangular surface Area of rectangle = length × breadth Ar(rectangle) = 30 × 20 Ar(rectangle) = 600 cm² Converting to m² Ar(rectangle) = 0.6 m² Using the formula P = F/A Where
Substituting the values we have → P = 20/0.6 → P = 20/(6/10) → P = 200/6 → P = 33.33 Pascal (N/m²) Hence , pressure acting of the rectangular surface = 33.33pa |
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| 972. |
In distance-time graph distance is taken along (a) X-axis (b) Y-axis (c) Z-axis (d) None of these |
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Answer» (b) Y-Axis Explanation: |
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| 973. |
W,X,Y,Z are four substances. W attracts Y and does not attract X & Z. X is soluble in Z whereasW & Y are insoluble in Z. Then what could be W, X, Y, Z among salt, magnet, water, iron nail. |
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Answer» Answer: W is magnet and y is IRON NAIL and X is water and z is salt Explanation: i hope it helps you . thanks. |
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| 974. |
Given below are the uses of some separation processes.P. used to separate heavier and lighter components of a mixture by windQ. used when components of a mixture have different sizesR. used to get back a substance that has been dissolvedWhich of the above correctly describes the use of evaporation, as a separation process? Give an exampledescribing the same. |
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Answer» R Explanation: |
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| 975. |
The distance between your house and your school is 120 km. A bus takes 3hr to cover this distance. The speed of the bus is |
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Answer» Explanation: 40km/hour is your ANSWER MARK me the BRAINLIEST |
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| 976. |
2.Ashok has some marbles of different colours. All of them are of the same size. He wants to separate all thered meubles from the others, What method enn be suggested to him? Why? |
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Answer» Answer: Handpicking can be done because they are of the same SIZE but DIFFER in COLOUR. |
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| 977. |
What is the the SI unit ? |
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| 978. |
1. The steps involved in purifying impure salt crystals obtained from sea water are given below. Butthey are jumbled up. What is the correct order?P: Filtration to remove insolubleQ:CrystallisationS: BoilingimpuritiesR: CrushingT: Dissolving in water |
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Answer» Answer: he was said was is was is was was said a the not jsjsksjsksjskej I UH COMPLETED MAM uh Completed mam jsjsksjsksjskej I Completed mam uh Completed mam Completed mam jsjsksjsksjskej I |
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| 979. |
What is the speed of light? |
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Answer» here is your ANSWER dear Mark Me As BRAINLIEST PLZ Plz |
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| 980. |
XXIV. What happens to the body on which werk is done:It loses enengoXchange in the energyFirst it loses then it gain |
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Answer» Answer: 24 Explanation: And V == 5 |
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| 981. |
State 2 factors which affect the moment of force |
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Answer» Explanation: The SIZE of a moment DEPENDS on TWO factors:
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| 982. |
A 7kg object initially at rest explodes Into two parts. One part weighing 2kg goes east at the velocity of 20m/s,find the velocity of the second part |
Answer» Given :
To find :
SOLUTION:Mass of the second part = Mass of object - Mass of first part = 7 - 2 = 5 kg Velocity of the body initially = 0 . The formula of momentum is given by : p = mv p = 7 × 0 p = 0 kgm/s So , the initial momentum of the body is 0 . Momentum of the first part is : p = mv p = 2 × 20 p = 40 kgm/s According to law of conservation of momentum , Initial momentum = Final momentum Therefore , the momentum of the body will be equal to the SUM of the momentums of the two parts . 0 = 40 + momentum of second Momentum of second part = -40 kgm/s This -ve sign shows that the direction of momentum will be opposite to the direction of momentum of first part ,i.e. towards west so that the momentum remains conserved . Therefore , the magnitude of the momentum of second part = 40 kgm/s .
Using formula of momentum : v = 40/5 v = 8m/s So , the second part will move with the velocity of 8 m/s in the west direction . |
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| 983. |
A student was observing the image of a distant tree using a device. He was able to get an inverted image on the screen. Name the device used by him. |
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| 984. |
Are kg/s and m/s^2 same |
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Answer» Answer: no Explanation: KG / s it's fake but m/s^2 is the SI unit of ACCELERATION |
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| 985. |
Food cans are coated with tin and not with zinc becouse option 1zinc is less reactive than tin 2zinc is more reactive than tin 3zinc has a higher melting point than tin 4zinc is costiller than tin |
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Answer» Answer: OPTION 1 Explanation: because zinc is less reactive than TIN so it PREVENTS the FOOD from getting spoiled. |
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| 986. |
YM. A fielder giving a swing while catching a ball is an example of:MomentumNewton's ?Law of motionNewton s ist Law of motion3 |
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| 987. |
XVII. The product of force and velocity is:a)b)Kinetic enerc)dNone of thesefederne white catebaltxamples |
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Answer» Answer: this is the answer Explanation: kinetic ENER is a answer from you soon I will mark u me to be there for you to come home to GROUP NHI aala KA nhi krte I don't want you need anything from the past few days. hope it's helps you please mark me at branlist answer. |
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| 988. |
Classify the following as element, compound and solutionZinc, sugar solution, salt, Sodium, waterDistinguish between Homogeneous and Heterogeneous mixture(any three points) |
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Answer» H2o sugar SOLN compound solute and solvent are finelydissolvedin homo butnot in hetro |
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| 989. |
Who is isaac newten please say |
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Answer» a FAMOUS SCIENTIST who DISCOVERED GRAVITY |
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| 990. |
State two methods of increasing the force produced by the slave cylinder piston. |
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Answer» Answer: 1: INCREASING AREA Of Application Of Pressure |
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| 991. |
a car of mass 2500kg moving with a velocity 10m/sec bought to rest in 5 sec by applying brakes. Find the retarding force produced by the brakers |
Answer» Given:-Mass of the car(M)=2500kg Initial velocity(u)=10m/s Final velocity(v)=0 (as the car FINALLY stops amd comes to rest after APPLICATION of brakes) Time(t)=5s To find:-First,the acceleration and finally the retarding force(i.e. force in the opposite direction of INITAIL velocity) Solution:-We know that----- a=(0-10)/5 a= -10/5 a= -2m/s² Now,by---- F=MaF= 2500×(-2) F= -5000N Since force is -5000N,thus the retarding force is 5000N. |
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| 992. |
A bullet hits a wall with a velocity of 20m/s and penetrates up-to a distance of 10cm,find the deceleration of the bullet |
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Answer» -2000m/s^2 Explanation: V^2=u^2+2as 20^2=0+2a×0.1 400÷0.2=a 2000=a retardation in OPPOSITE |
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| 993. |
2. According to the third law of motion action and action(a) always act on the same body(b) always act on different bodies in opposite ochons(c) have same magnitude and directions(d) act on either body at normal to each other |
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| 994. |
What is the maximum power in kilowatts of the appliance that can be connected safely to a 13 A ; 230 V mains socket? |
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Answer» Explanation:
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| 995. |
URGENT!!!!! If the distance between two object decreases to 25%, then to what % does the force of gravitation change? |
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Answer» Answer: Therefore when the distance between the OBJECTS is reduced to half, then the force of GRAVITATION increases by FOUR times the ORIGINAL force. Explanation: plz mark me as brainliest |
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| 996. |
URGENT!!! If the mean distance of a planet from the sun is 4times the mean distance of Earth from the sun, then how many years does that planet take to move on e around the sun? |
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Answer» That PLANET will take 4 YEARS to MOVE around or rotate around the sun . |
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| 997. |
HYPO MEANS IN PHYSICSSAY CORRECT ANSWER |
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Answer» INFERIOR to the PHYSICAL,BENEATH or below the physical hope it will be USEFUL to you |
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| 998. |
Under what condition the magnitude of average velocity of an object is equal to its average speed |
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Answer» Answer: hii guys.. Explanation: Average velocity WOULD be equal to average speed when the total distance TRAVELLED equals the net displacement of a PARTICLE. This happens when a particle moves ALONG a straight line in a fixed direction... |
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| 999. |
F=a+bt dimension formula |
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Answer» Answer:PLS MARK BRAINLIEST Explanation:f = a√x + b t 2, where f = (M L T −2(, x = (L) and t = (T). Hope it helps!!! According to principle of HOMOGENEITY, The DIMENSION of EVERY term on right hand side should be same as that on LEFT hand side. |
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| 1000. |
true or false a) sliding and steady friction are two kinds of kinetic friction b) static friction acts when an object actually moves |
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Answer» Answer: 1. true 2. false |
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