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2701.

2. How does air move​

Answer»

ANSWER:

Air MOVE by UNEVEN heating of earth.

Hope it helps

PLEASE mark it BRAINLIEST

and follow me for answers :)

2702.

How much momentum will a bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m/s^2Look I know the answer of the question I just want to know explanation of it correct answer with full explanation will be marked brainliest.​

Answer»

ANSWER and EXPLANATION are both in picture

HOPE IT HELPS YOU!

PLEASE MARK ME BRAINLIEST!!

2703.

4 . Three students measured the length of same wall. The result of these studentsare different.What might be the possible reasons.

Answer»

Answer:

one of them MAY be MEASURED the length

one of them may be measured the breadth

one of them may be measured the HEIGHT

so there are some poosibilites to get different MEASURMENTS

2704.

She is an inspiring lady. she is famous as chipko woman​

Answer»

ANSWER:

Her NAME was GAURA Devi.

HOPE MY ANSWER HELPED!!

2705.

Why are the raindrops spherical​

Answer»

Answer:

\huge\red{ \mid{ \underline{ \overline{ \tt a \pink{n} \blue{s} \purple{w} \gray{e} \orange{r}:-}} \mid}}

"This REMARKABLE evolution RESULTS from a tug-of-war between two forces: the surface TENSION of the water and the pressure of the AIR pushing up against the bottom of the drop as it FALLS. When the drop is small, surface tension wins and pulls the drop into a spherical shape.

\boxed{f} \red{o} \boxed{l} \pink{l}\boxed{o} \green{w} \:  \:  \boxed{m} \purple{e}

2706.

Imagine that friction has disappeared from the earth.what will happen? Explain.​

Answer»

Answer:

if friction will dissappear from the earth, eveyhting will BECOME slippery , no ONE can WALK properly , there will be a lot of accidents as cars will not be in control , and many PROBLEMS

2707.

What happen when there is friction between chalk and black boardplz tell me ans​

Answer»

Explanation:

If friction was absent, the CHALK deposits would not STICK to the board and no MARK would be left behind. This would have made it IMPOSSIBLE to WRITE with the chalk on the blackboard.

2708.

A German scientist Guericke invented Select one: A. pump to exert air out of vessel B. barometer fill air pressure C. pump to fill air pressure D. barometer to measure air pressure

Answer»

ANSWER:

OPTION B

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2709.

A ship has a two engines, one producing a thread 300 newton and other 700newton firing the small engine for 10s speed the ship up from 80 meter per second to 95 meter per second and large engine the fired for 12second how fast is the ship from going​

Answer»

ANSWER:

the QUESTION is not CLEAR..I did not GET your POINT

2710.

The area of the parallelogram whose adjacent sides are given by a = 3i - j+2k and 5 =i+49-6 is[Note: Area of the parallelogram is axba) 614 sq unitsb) 614 sq unitsc) 573 unitsd) 32 units​

Answer»

GIVEN :

\bf \overrightarrow{a} = 3 \hat{i} -  \hat{j} + 2 \hat{k} and \bf \overrightarrow{b} =  \hat{i}+ 4 \hat{j} -6 \hat{k} are adjacent SIDES of PARALLELOGRAM .

TO FIND :

• Area of parallelogram = ?

SOLUTION :

• We KNOW that area of parallelogram is –

\bf  \implies \large{ \boxed{ \bf Area =| \overrightarrow{a} \times \overrightarrow{b}|}}

\bf  \implies  Area =|(3 \hat{i} -  \hat{j} + 2 \hat{k} )\times ( \hat{i}+ 4 \hat{j} -6 \hat{k})|

\bf  \implies  Area = \left|\begin{array}{ccc}\bf\hat{i} & \bf\hat{j}& \bf\hat{k} \\ \\\bf3& \bf - 1& \bf2 \\  \\\bf1& \bf 4& \bf - 6\end{array}\right|

\bf  \implies  Area =|\hat{i} \{ ( - 1)( - 6) - (4)(2)\} -\hat{j} \{ (3)( - 6) - (4)(2)\}  + \hat{k} \{ ( 4)(3) - (1)( - 1)\}|

\bf  \implies  Area =|\hat{i} \{6 - 8\} -\hat{j} \{ - 18- 8\}  + \hat{k} \{12 -( - 1)\}|

\bf  \implies  Area =|\hat{i} \{ - 2\} -\hat{j} \{ -26\}  + \hat{k} \{12  + 1\}|

\bf  \implies  Area = |- 2\hat{i}  + 26\hat{j}+13 \hat{k}|

\bf  \implies  Area = \sqrt{ {( - 2)}^{2} +  {(26)}^{2} +  {(13)}^{2} }

\bf  \implies  Area = \sqrt{4+  676+169}

\bf  \implies  Area = \sqrt{849} \:\:sq.\:\: units

\bf  \implies {\boxed{ \bf Area = 29.14 \:\:sq.\:\: units}}

2711.

वन व्हिच ऑफ दिस इज समथिंग समथिंग विथ हाउस एवं संत समन्वय संस्था क्रश फाइंड इट्स वॉल्यूम​

Answer»

ANSWER:

I don't KNOW MATE................ FOLLOW me ..........

.

.

..

.. m......

#dontknow

................just................

2712.

What is easier rolling or sliding pls tell me ans​

Answer»

ANSWER:

FIRST MARK me as BRAINLIET

2713.

How are thunderstorms formed?​

Answer»

ANSWER:

HOPE it will HELP for you

2714.

What does centipetral acceleration mean ?​

Answer»

Explanation:

Centripetal acceleration, PROPERTY of the motion of a body traversing a circular path. The acceleration is directed RADIALLY toward the centre of the CIRCLE and has a magnitude equal to the square of the body's speed along the CURVE divided by the distance from the centre of the circle to the moving body.

2715.

Domestic sewage, released into rivers, causes-(1) growth of algae(2) killing of bacteria(3) increase in oxygen (4) survival of marine life​

Answer»

ANSWER:

GROWTH of ALGAE

It CAUSES growth of algae in RIVERS

2716.

If train needs to stop by next station.driver apply break causing

Answer»

ANSWER:

....causing the rotatory motion of the WHEELS to cease and HENCE STOPPING the TRAIN

2717.

1m²=—cm². please answer me as​

Answer»

Answer:

10000cm²

Explanation:

i think

1m =100cm

1² = 100²

1m= 10000cm²

2718.

Please tell how to arrive at the answer (c)

Answer»

ANSWER:

answer is OP a)

EXPLANATION:

2719.

Who is the first women to go to space?​

Answer»

ANSWER:

valentina tereshkova

Explanation:

she is the first woman to go to space she is a RUSSIAN cosmonaut

if it is HELPFUL PLSS mark me as brainly

2720.

When does the force come into play ​

Answer»

ANSWER:

I HOPE that the above PICTURE HELPS MATE...

2721.

The density of lead is 11g/cc. What do you mean by the statement. ​

Answer»

ANSWER:

By the STATEMENT we can understand that the MASS of 1cm^3 lead is 11.6 gram.

2722.

A ball is thrown vertically upwards, and then caught again after 10 seconds.Which of these graphs shows how its SPEED changes during its motion? show it with a graph

Answer»

ANSWER:

VELOCITY TIME graph

Explanation:

PLZZ FOLLOW me

2723.

Give one example of a body that has potentialenergy, in each of the following: (i) due to itsposition, (ii) due to its state.​

Answer»

Answer:

1) position

hope it HELPS you

2724.

Newtons's 2nd law explains us​

Answer»

Answer:

The second law of motion describes what happens to the massive BODY when acted upon by an EXTERNAL force.  The law states that the force acting on the body is equal to the product of its mass and acceleration.

Explanation:

When a constant force acts on a body, the forces result in the acceleration of the body.  However, if the object is already in motion, or if this situation is viewed from a moving frame of reference, the body might appear to speed up or SLOW down or change its direction DEPENDING on the direction of the force.

Mathematically, we express the law as follows:

f∝dPdt⇒f∝mv−mut⇒f∝m(v−u)t⇒f∝ma⇒f=kmaWhere k is the constant of proportionality and it comes out to be 1 when the values are taken in SI UNIT. Hence the final expression will be,

F=ma

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2725.

At a temperature, a presure on acooker will be 2000 pa .67 degree celcius of a temperature gives a pressure is 4000pa .find initial temperature

Answer»

Answer:

Pressure cooking is the process of cooking food at high pressure, employing water or a water-based cooking liquid, in a sealed vessel KNOWN as a pressure cooker. High pressure limits boiling, and permits cooking temperatures well above 100 °C (212 °F) to be reached.

The pressure cooker, invented by the physicist Denis Papin, works by expelling air from the vessel, and trapping the STEAM produced from the boiling liquid inside. This raises the internal pressures and permits high cooking temperatures. This, together with high thermal HEAT transfer from the steam, cooks food far

more quickly, often cooking in between half and a quarter the TIME for conventional boiling. After cooking the steam is released so that the

2726.

Push or a pull is a dash​

Answer»

Answer:-

A push or pull is a Force.

ADDITIONAL INFORMATION!!

✧ Product of mass and ACCELERATION is CALLED force.

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀OR

A push or pull of an object is called force.

✧ SI unit of Force is Newton.

✧ It is denoted by N.

✧ Force is vector Quantity i.e., both Magnitude and direction.

✧ Mathematical term

⟹ Force = Mass×Acceleration

Force = Pressure * Area

2727.

Magnetic force is an example for dash​

Answer»

Answer:

FORCE

is ur answer mate

________________________________________

MARK ME AS BRIANLIEST MATE

AND DO THNX MY ANSWER :)

@selflove

2728.

Answer with reason fast....plz☝​

Answer»

EXPLANATION:

c R2 and v only I hope it is HELPFUL for you

2729.

Solve attachment fast no spam​

Answer»

ANSWER:

OPTION B

Explanation:

option b and option a

2730.

What is the approximate size of a molecule... pls tell​

Answer»

Answer:

Matter is made up of molecules which are very small in size (~10-9 m).

Explanation:

Hey, you can calculate it yourself, for any pure substance. For example, 18 G of water takes up 18 ml of space. It ALSO consists of 6.023 x 10E23 molecules of water so just divided the NUMBER of molecules into the 18 ml and you will have the amount of space that each water molecule takes up.

You can do this calculation for any other pure substance. Just look up the molar mass of the substance. If you take that mass of the substance and divide it by the density of the substance (also easy to look up) you will have calculated the molar volume of the substance, just like the 18 ml value for water. That value is the space that 6.023 x 10E23 molecules of the substance take up and again simple division gives you the amount of space one molecule takes up.

AMAZE your friends and loved ones. Do the calculation in front of them. Learn to do it in your head and amaze everyone!

2731.

Write at least 5 examples of 1st, 2nd and 3rd Law of motion from your surroundings.

Answer»

EXPLANATION:

i HOPE this will HELP you

please GIVE me BRANILIST

2732.

The density of of water is less than air true or false if false so tell the correct one​

Answer»

Answer:

False

Explanation:

Air has a density of about 1.2 g /LITRE, and WATER has a density of about 1 kg /litre. Air is THEREFORE about 830 times LESS dense than water.

2733.

4.A bullet entering a metal block of 30 cm length stops on reacting 25 cm. The energy with thebullet will be lost[ ]a) In imparting momentum to the block b) In the form of heatc) both (1) and (2)d) Neither (1) nor (2)​

Answer»

ANSWER:

C.both (1) and (2)

EXPLANATION:

.

..

...

....

.....

2734.

Removing dalda from dalda packet is an example for​

Answer»

Removing dalda from dalda PACKET is an EXAMPLE for  PHYSICAL change.

Explanation:

  • In the field of CHEMISTRY, a physical change can be described as a type of change in which a substance might change from ONE form to another but  the chemical composition of the substances does not change.

  • Removing dalda from dalda packet will allow the ghee to lose its shape and take the shape of the container in which it will be poured. Hence, it will be a physical change.
2735.

If net unbalanced external force acting on an object is zero, then (A) Velocity of object may or may not be zero (B) Acceleration of object must be zero (C) Velocity of object must be non-zero (D) Acceleration of object must be non-zero constant

Answer»

ANSWER:

CAN YOU MAKE THE ANSWER AS THE BRAINEST ANSWER.......

Explanation:

As it is an balanced force it doesn't move the object and hence the velocity of the object will remains in its REST position bro

2736.

Which of the following has more inertia ?A TRAIN OR A AEROPLANE​

Answer»

ANSWER:

<U>A TRAIN

Explanation:

hope it HELPS u!

2737.

. When will two elements on being mixed together form a compound?​

Answer»

EXPLANATION:

When two elements are MIXED together, a compound is only FORMED when they react with each other. If they donot react, no compound is formed

2738.

Choose the odd one fixed resistance rheostat variable resistor heater

Answer»

ANSWER:

what we have to do BRO?????

2739.

a rectangular block of copper metal weighs 1998g.the dimension of the block are 8.4CM×6.5×5.6.what is the density of copper.​

Answer»

Answer:305.76 m^3

Explanation:HOPE it HELPS

2740.

Aarushi was driving a car with uniform speed of 60 km/h. Draw distance – timegraph. From the graph, find the distance travelled by Aarushi in:(i) 2 12hours (ii) 12hour​

Answer»

Answer:

EXPLANATION:

y = 60 t

it would be a straight line PASSING through origin

distance travelled in 2.5 HOUR = 60 ∧ 2.5

= 150

distance travelled in 0.5 hour = 60 ∧ 0.5 = 30

2741.

What is meaning of frequency​

Answer»

Answer:

Frequency is the number of OCCURRENCES of a REPEATING EVENT per unit of a TIME .

2742.

Physics pls help no useless answers ​

Answer»

ANSWER:

4N is the answer for this QUESTION

2743.

Veneer is normally obtained from _____________ wood metal plastic rubber clay

Answer»

Explanation:

Aries obtained EITHER by PEOPLE in the trunk of a TREE .

2744.

He S.I unit of energy is _____________

Answer»

ANSWER:

JOULE(J)......

HOPE it will HELP you

2745.

Calculate the power of anengine which cansupply 60 kg of energy per minutes​

Answer»

ANSWER:

if the engine can supply 60 kg in 1 minute so it can supply

Explanation:

(60×60)kg

3600kg in 1 he

1hr=3600kg

=3600×24kg

=86400kg in 1 DAY

2746.

Define byte in computer​

Answer»

ANSWER:

HOPE it MIGHT HELPS U!!!!

2747.

Anyone pls give good notes of ch atoms and molecules

Answer»

Atoms and MOLECULES

The smallest particle of an element, which may or may not exist independently but I'm always TAKES part in a chemical reaction is called an atoms

The smallest particle of a pure substance which always exists independently and can RETAIN all the chemical and physical properties of that substance is called a molecule.

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2748.

A shopkeeper earns a profit of rupees 20 by sending a notebook and incurred a loss of rupees 5 by selling a pen on a particular day the shopkeeper Associates notebooks and encourage a loss of rupees 150 how many pencils A shopkeeper sells that day when is net profit loss​

Answer»

ANSWER:

FIRST FOLLOW me PLEASEPLEASE

2749.

Change of state of matter due to accumulation of molecules at a place due to slow molecular motion is ________.​

Answer»

Answer:

freezing is the answer

i THINK you will not read BOOKS

2750.

What is sunlight explain it​

Answer»

Answer:

The electromagnetic energy released by sun is termed as SUNLIGHT. It primarily consists of VISIBLE LIGHT, ultraviolet RAYS and infrared RADIATION, which later scatter throughout the planet after entering the atmosphere.