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2851.

an athlete runs on the circular ground of the radius r and completed 2 whole 3/4 tern then find the displacement and distance.​

Answer»

ANSWER:

DISPLACEMENT = DIAMETER =2r

distance = LENGTH of SEMICIRCLE

2852.

A train travels a distance 300km with an average speed of 60km/h .Find how much of time it takes ​

Answer»

Explanation:

T = D/S

T=300/60

T=5

it will TAKE 5 HOURS to COVER that distance

2853.

Please help ppppppppp​

Answer»

Answer:

The total distiance is 25.....KM..

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Explanation:

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2854.

- cows gives milk insert article​

Answer»

ANSWER:

The COW GIVES milk

Explanation:

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2855.

What mean kavin????​

Answer»

From WIKIPEDIA, the free encyclopedia. KAVIN (european/English. / ˈkɛvɪn/) ) is a unisex given NAME, which is Tamil/English for "beauty", "grace", "FAIRNESS" or "calmness". It refers natures beauty Or the angel of christus...

2856.

MEANING OF ELETROLYTE ??​

Answer»

Answer:

a liquid or GEL which contains ions and can be DECOMPOSED by ELECTROLYSIS, e.g. that PRESENT in a battery

2857.

A car coming from home to office in a speed of 40km/h time is 15 minutes find the distance of car?​

Answer»

Answer:

Speed of car in FIRST 15 MINUTES = 40 km/h

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes =

60

15

hour

Distance covered = 240×

60

15

=10km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60×

60

15

=15km

∴ Total distance covered = (10+15)km = 25 km

∴ 25 km is CORRECT

2858.

What is least count of screw gauge​

Answer»

The LEAST COUNT of SCREW GAUGE is 0.01 MM.

2859.

what is the weight of the body on moonhaving mass, 60kg on earth? if g'= g/6ehere acceleration due to gravity and g'on moon​

Answer»

Given that gravity on the Moon has APPROXIMATELY 1/6th of the strength of gravity on EARTH, a man who WEIGHS 60kg on Earth would WEIGH approximately 10kg on the Moon.

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2860.

The density of air is 1.28 g/l expressthe value in gram per centimeter cube​

Answer»

ANSWER:

ansnksn AMAN

EXPLANATION:

jak ja rhi Bau ja ab ah

2861.

Please someone only letter pls fast I’ll mark u brainliest pls pls

Answer»

Hey mate here is your answer

sender's address

date

receiver's address

subject: explaining about the contribution to MURSHID quli khan in making of murshidabaad

dear friend

HEY friend kindly write the content in the IMAGE

thanking you

your's lovingly

ur name

Hey mate hope it helps you please make my answer as a brainliest answer

2862.

A large truck and a car, both moving with a velocity of magnitude v, have a head on collision and both of them come to a halt after that. If the collision lasts for 1sec. Which vehicle experiences the greater acceleration? * a)A large truck b)A car c)Both the vehicles experience the same acceleration. d)None of the above

Answer»

ANSWER:

the CAR because the TRUCK has more MASS than the car.

2863.

(55m) at 10.30 am (255m) at 10.32 am __________A___________________B___________ The average speed of a body in the above diagram is a)16.67 m/s b)1.67m/s c) 0.167 m/s d) 166.7m/s

Answer»

ANSWER:

v = u + a*t , u = 0 because it starts from rest

a = 100/10 = 10 m/s²

Distance is v² - u² = 2*10*s , u=0 , v=100

s = 100*100/2*10 = 500 m

Total distance is 500 + 100*10 = 1500 m

Average VELOCITY is 1500/(10 + 10) = 1500/20 = 75 m/s

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2864.

5.Which of the following quantities is not vector?(a) momentum(b) energy(c) velocity(d) force​

Answer»

ANSWER:

ENERGY is not a VECTOR. It is a SCALAR QUANTITY.

2865.

100 newtons of force is exerted on surface of area 10 m^2 normally. Pressure acting on the surface will be __________ Pa.​

Answer»

ANSWER:

pressure=f/a

so preesure=100/10

pressure=10 Pa

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2866.

Land use is determined by​

Answer»

Explanation:

The use of LAND is DETERMINED both by PHYSICAL factors such as topography, climate, soil types as well as human factors such as population density, TECHNOLOGICAL CAPABILITY and culture and traditions etc

2867.

Which of the following represents the SI unit of force?a) J(b) N(c) m/s (d)Pa​

Answer»

ANSWER:

N(Newton) Is the SI UNIT of FORCE.

2868.

Red soil is reddish in colour due to increased amount of​

Answer»

ANSWER:

IRON particles

Explanation:

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2869.

a potters wheel is spun around using a force of 20N if the moment of the force is 8N m, what is the diameter of the wheel?​

Answer»

Answer:

14 meters

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2870.

Aman walks on a straight road from his home to school 5 km away witha speed of 10 km/h . Time taken byAman to go from home to school,equals-O 18 minutesO 30 minutesO 40 minutesO 50 minutes​

Answer»

Answer:

answer is b.

Explanation:

Time = DISTANCE ÷ speed

= 5 ÷ 10

=0.5 hour

= 0.5 × 60 ( as 1 hour equals to 60 MINUTES )

= 30 minutes

2871.

_ and _ react with oxygen vigorously at room temperature and they are kept in_to prevent oxidation.​

Answer»

ANSWER:

Na and k

kerosene

Explanation:

Na. and K are highly restive metal the CATCH FIRE when come in CONTACT with oxygen and WATER.

2872.

1km*2=km×km =.......... ×........ m=..... *2​

Answer»

Answer:

1 km² = 1000 × 1000 m² = 10⁶ m²

2873.

A car covers a distance 100km in 1hr 20min find the speed in km/hr​

Answer»

Answer:

Explanation: Just simply DIVIDE 100 kilometers by 20 and you'll get 5, and SINCE you mentioned it's kilometers per hour; the answer should be in hours. Therefore it's 5 hours.

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2874.

Force changes ……………… of an object i} volumeii} speediii} densityiv} none

Answer»

none

Explanation:

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2875.

A car travels a distance of 100m with a constant acceleration and average velocity of 20m/s . If the final velocity acquired by the car is 25m/s , its initial velocity is ---------------------- a) 2 m /s b) 20 m /s c) 15 m /s d) 30 m/s

Answer»

Can you do the blanlist ANSWER PLEASE

2876.

A person walking on a straight line for 60m.Then he turn right 90 degree and travel 100m. Again he turn right 90 degree and travels 60m.1) Draw the path of the person?2) Find the total distance travelled ?3) Find the total displacements?​

Answer»

ANSWER:

HOPE you have GOT your answer.

2877.

Can we measure magnetic force?​

Answer»

The INTENSITY of a magnetic field, MEASURED in Gauss or Teslas (10,000 Gauss = 1 Tesla), is also a common measurement of a MAGNETS strength as this is a representation of the density of a magnetic field produced by a magnet, known as flux density.

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2878.

Question in the slide​

Answer»

Answer:

FOR AN ISOLATED SYSTEM TOTAL MOMENTUM REMAINS CONSTANT!!

2879.

Please help tell me the answer please

Answer»

Answer:

3rd OPTION bduddhdbhdbdudnd

2880.

How many electrons are present in m shell​

Answer»

EXPLANATION:

it DEPENDS we can SAY 18

2881.

What is meaning of magnetism​

Answer»

ANSWER:

MAGNETISM means ATTRACTION and reputation of a SUBSTANCE

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2882.

The solid obtained by cooling the vapours of the solid is:

Answer»

Answer:

Sublimation is CONVERSION of SOLID of vapors on heating and vapors to solid on cooling. The solid which undergoes sublimation is called sublime, whereas the solid obtained by cooling vapors is called sublimate.

Explanation:

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2883.

Chemical rule of water​

Answer»

Answer:

The molecule of water

In water, each hydrogen nucleus is BOUND to the central OXYGEN atom by a pair of electrons that are shared between them; chemists call this shared electron pair a covalent chemical bond. ... The result is a distorted tetrahedral arrangement in which the H—O—H ANGLE is 104.5°

Explanation:

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2884.

1. Calculate work done when a 40 N force produces a displacement of 20 m in the direction of force​

Answer»

ANSWER:

Hiiiiiiiiiiiiiiiiiiiiiiiii

2885.

LATENT HEAT IT EFFECT OF TEMPRATURE OR PRESSURE ON GASEOUS STATE OF SUBSTANCE​

Answer»

Answer:

Physical conditions like temperature and pressure affect state of matter. ... When thermal energy is added to a substance, its temperature increases, which can change its state from solid to LIQUID (melting), liquid to GAS (vaporization), or solid to gas (SUBLIMATION).

EXPLANATION:

l hope it's help you friend THANKS

2886.

A car is moving with a velocity of 16m/s when beakrs are applied. the force applied by the brake is 1000n .the mass of the car alogn with its passengers is 1200kg how long should the brakes be applied ​

Answer»

Answer:

EXPLANATION:

given that, Vi=16 m/s

and to stop the car final velocity should be zero therefore Vf=0,

and we have stopping force F= -1000 N (SINCE, force being acted OPPOSITE the speed of the car)

Total mass of the car, m=1200 Kg

therefore by Newtons' second law

net force= mass * acceleration, and acceleration, a=(Vf-Vi)/t, so

-1000 = 1200*(0-16)/t

-1000 = 1200*(-16)/t

1000 = 1200*16/t

1000*t = 1200*16

t = (1200*16)/1000

t=192/10

t = 19.2 seconds

The brake should be APPLIED for 19.2 seconds in order to stop the car.

have a good day

2887.

7. Give reasons:(c) Mountaineers may suffer from nose bleeding at high altitudes.​

Answer»

Answer:

Air pressure goes on decreasing as we go higher up, so at high altitudes, the atmospheric pressure becomes LESS than the pressure exerted by the BLOOD inside the body. This CAUSES some of the blood vessels burst and the NOSE starts BLEEDING.

2888.

Can somebody please solve this question?❤️Also, thank you all for 600 followers❤️❤️ Thank you ❤️​

Answer»

Answer:

17/4 PLEASE MARK as BRAINLEIST

2889.

Inertia of motion prevents an object from falling backwards or forwards? Pls ans fast. Correct ans will be marked as brainliest...Pls ans

Answer»

Answer:Inertia in a MOVING BUS when brake is applied

As the driver applies brakes, the bus COMES to rest. But, the passenger tries to maintain the inertia of motion. As a result, a FORWARD force is exerted on him. Similarly, the passenger tends to fall back when the bus accelerates from rest because when the bus accelerates, the inertia of the rest of the passenger tends to oppose the forward motion of the bus. Hence, the passenger tends to fall back when the bus accelerates forward.

Explanation:

2890.

Explain the chemical properties of both metals and non metals​

Answer»

ANSWER:COMPARISON Of Chemical Properties Of METALS And Non-metals

Metals on reacting with water form metal oxides or metal HYDROXIDES and release H2 gas. Non-metals cannot give electrons to hydrogen in water to be released as H2 gas. Non-metals have no reaction with water. Metals react with oxygen to form basic oxides.

Explanation:

2891.

Dentist observe and check the patient's teeth using a mirror with it and its radius in order for whole to be seen clearly by doctor what is the distance between the patient's teeth and the mirror?​

Answer»

Answer: the DISTANCE between the PATIENT's TEETH and the mirror is 16 because if the RADIUS of 8 then the DIAMETER of 16.

2892.

Plot velocity versus mass graph when momentum is fixed​

Answer»

ANSWER: Momentum of an object of mass m moving with a velocity v is the PRODUCT of it. ... So, Hence, FORCE applied on an produces acceleration, (i)Momentum versus velocity when mass is fixed, If m is fixed, then Momentum versus velocity graph will be a straight line passing through the ORIGIN (if v = 0, then p = 0).

Explanation: Momentum The quantity of motion possessed by a moving body is known as momentum of the body. Momentum of an object of mass m moving with a velocity v is the product of it. It is denoted by p p= mv Its Sl unit is. As from Newton's lInd law, rate of change of momentum is EQUAL to force applied. So, Hence, force applied on an produces acceleration,(i)Momentum versus velocity when mass is fixed, If m is fixed, then Momentum versus velocity graph will be a straight line passing through the origin (if v = 0, then p = 0). (ii) Momentum versus mass graph when velocity is constant for different body If velocity is constant for different masses, then So, the momentum versus mass graph will be a straight line passing through the origin (if m = 0, then p= 0).          

2893.

In atug- of war, when Team A ispulling the rope with a force of looN and TeamB is BON, what is the net force acting onthe rope ? Mention the direction in whichthe resultant force acts​

Answer»

Answer:

20 N TOWARDS the DIRECTION of TEAM A

2894.

A car is travelling along a circular path with uniform speed. Is its velocity uniform? Why?

Answer»

Answer:

Explanation:

When any object MOVES in a circular path with uniform speed rather constant speed, then the  motion is called a Uniform Circular motion. Since velocity is a vector quantity which depends  on the direction too besides the MAGNITUDE, here by this way the direction of the object continuously changing HENCE the velocity changing as well, so  the velocity of any object  moving in a circle with uniform speed is not uniform.

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2895.

Ques) What concepts of physics are involved in baking of cake using a cooking pan?

Answer»

ANSWER:

HEAT

EXPLANATION:

2896.

Compare the thermal conductivity in Metals and non metals​

Answer»

Temperature. The effect of temperature on thermal conductivity is different for metals and nonmetals. In metals, heat conductivity is PRIMARILY DUE to free electrons. ... On the other HAND, heat conductivity in nonmetals is mainly due to lattice VIBRATIONS (phonons).

2897.

Do gases also exert pressure on the walls of the balloon. Give reason for your answer ​

Answer»

ANSWER:

The molecules are CONTINUALLY COLLIDING with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces. ... If a gas is heated up, its particles move around more quickly.

Explanation:

2898.

A fielder giving a swing while catching a ball is an example ofI. InertiaII. MomentumIII. Newton’s II law of motionIV. Newton’s I law of motionPlz answer fast

Answer»

ANSWER:

III POTION is CORRECT I MEANS

2899.

True or False??a An object in a liquid sinks when its weight is greater than the upthrust acting on it.b An object floats when the upthrust is bigger than the weight.The force holding a climber on a climbing rope is upthrust.d A spring that extends 2 cm with a force of 1 N will stretch 4 cm with a force of 2 N on it.

Answer»

Answer:

1 ANS is TRUE 2 ans is FALSE 3 ans is true

2900.

calculate accleretation of a body of it's velocity changes from 10 metre per second to 20 metre per second in 4s​

Answer»

ANSWER:

answer 200

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