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The earth has an IMAGINARY LINE AROUND it which makes it rotate in its own axis.

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PHYSICS

A particle is moving in a straight line with initial velocity and uniform acceleration a. If the sum of the DISTANCE travelled in t

th

and (t+1)

th

seconds is 100 cm, then its velocity after t seconds, in cm/s, is

December 20, 2019avatar

Pulkit Rambo

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ANSWER

The distance travelled in N

th

second is

S

n

=u+

2

1

(2n−1)a ....(1)

So distance travelled in t

th

&(t+1)

th

second are

S

t

=u+

2

1

(2t−1)a ....(2)

S

t+1

=u+

2

1

(2t+1)a ....(3)

As per QUESTION,

S

t

+S

t+1

=100=2(u+at) ....(4)

Now from FIRST equation of MOTION the velocity of particle after time t, if it moves with an acceleration a is

v=u+at ....(5)

where u is initial velocity

So from equation (4) and (5), we get v=50cm/s

Answer:

The DIAGRAM at the right shows four incident rays originating from a point and incident towards a convex mirror. These four rays will each reflect according to the law of reflection. After reflection, the LIGHT rays diverge; SUBSEQUENTLY they will never INTERSECT on the object side of the mirror.

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s=ut+1/2at²

here u=0 as it is dropped

s=1/2×g×t²

s=1/2×10×100

s=5×100

s=500m

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Answer:

Explanation:

AVERAGE length= (2.48 + 2.46 + 2.49 + 2.50 + 2.48)/5 =2.482.

ABSOLUTE ERROR = 2.48 - 2.482 = |0.002|

2.46 - 2.482 = |0.022|

2.49 - 2.482 = |0.008|

2.50 - 2.482 = |0.018|

2.48 - 2.482 = |0.002|

% error = RELATIVE error* 100 = mean absolute error / mean error

= [ (0.002) + (0.022) + (0.008) + (0.018) + (0.002) ] / 2.482

= (0.042) / 2.482 = 0.0169 (approx. value)

now % error = 0.0169*100 = 1.69%

Answer:

You NEED to use a balloon, a glass, a mobile phone and some salt or sand particles

Explanation:

Step 1: Cut the balloon in half............

Step 2: Place the phone in the glass and COVER the half balloon on the mouth of the glass............

Step 3: Then put some salt particles on the balloon which you put on the mouth of the cup before................

Step 4: Then ring the phone which is in the glass...........

Step 5: The sand or salt particles on the half balloon START jumping.....

This proves that sound has ENERGY

Any QUANTITY that has a DIRECTION and magnitude is called velocity. It is a vector quantity

Answer:

COAL,PETROLEUM,natural gas ETC.

Answer:

it's 250 HERTZ

Explanation:

FREQUENCY =1/ time period

so 1/0.004= 250HZ

Answer:

YES, it can be if the distance TRAVELLED is from POINT A BACK to point B..

ANSWER:

EVEN I NEED this answer

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ANSWER:

jdkdmfnklxlxlxmxcjrkkkrlfkfmmcmcmc

Answer:

it's CALLED NORMAL it PERPENDICULAR and at same point on surface ALONG incident

Answer:

10^15

Explanation

(WAVELENGTH) X (FREQUENCY)=SPEED of light

frequency=(3X10^8)/(3000X10^-10)  (1A=10^-10)

= 10^15

Answer:

Natural materials are FUNDAMENTALLY DIFFERENT from man-made materials -- the first are sourced from nature, while the LATTER are sourced from a scientific laboratory. Different types of materials have different applications and USES, WHETHER everyday or specialized. You encounter all kinds of natural and man-made materials on a daily basis, even as you walk down the street.

ANSWER:

WORK done=2.6=12

dot PRODUCT along X axis

ANSWER:

Answer is 200 Hz

Explanation:

The trucks have double tyres at the back in order to MAINTAIN the heavy load of the truck. The large part of the weight of the truck is on the REAR axle. ... Also, the double tyres HELP to increase the cross-section area which DECREASES the pressure.❤️

ANSWER:

ELECTRIC CURRENT is 1/30A

Answer:

11.3 g/cc and 11300kg/cc

Explanation:

Answer:

Two charged particles are placed at a distance 1.0cm apart. What is the minimum possible magnitude of the ELECTRIC force acting on each charge? A . ... The force between the charges is: ... An electron and a proton are both released from rest 1 METER from a large stationary ..

EXPLANATION:

SOL-

1/f=1/v+1/u

1/20=1/4v+1/v

1/20=5/4v

4v=100

v=25cm

u=100cm

ANSWER:Its magnitude is 2.304×10^-24

Explanation:

For LEAST coulombs force CHARGE is least i.e. unit charge of electron(e=16×10^-20C)

ANSWER:

I don't KNOW answer..PLZ I WANT POINTS...

if it breaks then it FALLS if it's PHYSICS QUESTION then we should apply CONSERVATION of MOMENTUM

Answer:

It's ANGULAR MOMENTUM (L) is ALSO halved since,L=I.frequency

ANSWER:

98 JOULE

Explanation:

we KNOW that

force=mass × gravitional force

now, force =10×9.8

= 98 newton/second

as,we know that Newton/second is ALSO CALLED joule

then,=98 joule

ANSWER:

DIMENSIONS of A and B are,

A=M¹L¹T^-⁴

B=M¹L¹T^-3

ANSWER:INVERSELY proportional

But voltage constant is provided

EXPLANATION:

Answer:

USE friction FORMULA and SOLVE the PROBLEM

Frequency of irrigation depend on type of soil because if the soil is FERTILE then it NEEDS less water, but if the soil is arid so it needs more water so the frequency of irrigation directly depends on the type of soil.

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Answer:

Properties of the IMAGE formed by a convex mirror :

• The image is always virtual and erect.
• The image is highly DIMINISHED or point sized.

• It is always formed between F and P.

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dont FORGET the brainliest OPTION

ANSWER:

it will be SIZE *magnification i.e 1*2 equal to 2m

Answer:

DECREASES

Explanation:

The atmosphere is DENSEST at the SURFACE of the Earth mainly due to GRAVITY. As we move up, the amount of AIR decreases.

EXPLANATION:

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<P>Explanation:

Electric ENERGY = electric power × time = P × t. THUS the formula for electric energy is given by: Electric energy = P × t = V × I × t = I2 × R × t = V2t / R. ... The number of units of electric energy consumed is N = (total WATTAGE × time in hour)/1000.

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EXPLANATION:

SORRY FRIEND don't KNOW the answaer

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EXPLANATION:

C STANDS for coulomb

so Q = 3(1+2)

ANSWER:-pie/4

Explanation:USE SCALAR PRODUCT of VECTORS

Answer:

YES you are WRITE

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Answer:

moment of force is ALSO known as torque so

T=F×r

T=8N×2m

T=16joule

and torque PRODUCES the couple of FORCES that produces rotational effect hence rotational MOTION

Answer:

ABSOLUTE REFRACTIVE index is the refractive index of a MEDIUM in vacuum. More specifically, it is the ratio of the spped of light in vacuum to the speed of light in that medium. It is always GREATER than one .

Answer:

The President of India is the Supreme Commander of the Indian Army, and its professional head is the CHIEF of Army Staff (COAS), who is a four-star general.

...

Indian Army

Founded 1 April 1895

Country India

Type Army

Role. Land warfare

The Indian Army (Hindi: Bhāratīya Thal Sēnā) is the land-based branch and the largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army,[4] and its professional head is the Chief of Army Staff (COAS), who is a four-star general. Two officers have been conferred with the rank of field marshal, a five-star rank, which is a ceremonial position of great honour. The Indian Army originated from the armies of the East India Company, which eventually became the British Indian Army, and the armies of the princely states, which were merged into the national army after independence. The units and regiments of the Indian Army have diverse HISTORIES and have participated in a number of battles and campaigns around the world, earning many battle and theatre honours before and after Independence.[5]

Indian Army

ADGPI Indian Army.svg

Crest of the Indian Army

Founded

1 April 1895; 125 years ago

Country

India

Type

Army

Role

Land warfare

Size

1,237,117 active personnel[1]

960,000 reserve personnel[2]

245 manned aircraft[3]

Part of

Indian Armed Forces

Headquarters

New Delhi

Motto(s)

"Service Before Self"

Colours

Gold, red and black

March

Quick: Qadam Qadam Badaye Ja

Slow: Samman Guard

Anniversaries

Army Day: 15 January

Website

indianarmy.nic.in

Commanders

Commander-in-Chief

President Ram Nath Kovind

Chief of the Army Staff (COAS)

General Manoj Mukund Naravane, PVSM, AVSM, SM, VSM, ADC

Vice Chief of the Army Staff (VCOAS)

Lieutenant General Satinder KUMAR Saini, AVSM, YSM, VSM

Notable

commanders

Field Marshal K M Cariappa, OBE

Field Marshal Sam Manekshaw, MC

General K S Thimayya, DSO

Insignia

Flag

Flag of Indian Army.svg

Aircraft flown

Attack

HAL Rudra, HAL LCH

Helicopter

HAL Dhruv, HAL Chetak, HAL Cheetah, Kamov Ka-226

The primary mission of the Indian Army is to ensure national security and national unity, to defend the nation from external aggression and internal threats, and to maintain peace and security within its borders. It conducts humanitarian rescue operations during natural CALAMITIES and other disturbances, such as Operation Surya Hope, and can also be requisitioned by the government to cope with internal threats. It is a major component of national power, alongside the Indian Navy and the Indian Air Force.[6] The army has been involved in four wars with neighbouring Pakistan and one with China. Other major operations undertaken by the army include Operation Vijay, Operation Meghdoot, and Operation Cactus. The army has conducted large peace time exercises such as Operation Brasstacks and Exercise Shoorveer, and it has also been an active participant in numerous United Nations peacekeeping missions, including those in Cyprus, Lebanon, Congo, Angola, Cambodia, Vietnam, Namibia, El Salvador, Liberia, Mozambique, South Sudan, and Somalia.

The Indian Army is operationally and geographically divided into seven commands, with the basic field formation being a division. Below the division level are permanent regiments that are responsible for their own recruiting and training. The army is an all-volunteer force and comprises more than 80% of the country's active defence personnel. It is the largest standing army in the world, with 1,237,117[7][8] active troops and 960,000 reserve troops.[9][10] The army has embarked on an infantry modernisation program known as Futuristic Infantry Soldier As a System (F-INSAS), and is also upgrading and acquiring new assets for its armoured, artillery, and aviation branches.[11][12][13]

Given:

Atomic mass of carbon is 13.00335 amu and it’s mass number is 13.

To Find:

What is the binding energy of NEUTRON present in nucleus?

Solution:

Given that actual mass of nucleus is:

Actual mass of nucleus = 13.00335 amu

Predicted mass of nucleus is given below:

Predicted mass of nucleus = 13 amu

We KNOW the formula of mass defect of nucleus:

Mass defect =Actual mass of nucleus - Predicted mass of nucleus

On PUTTING respective in above equation:

Mass defect = 13.00335 - 13

Mass defect = 0.00335 amu

We know mass defect of 1 amu of nucleus is EQUIVALENT to 931 MeV of binding energy:

Binding energy = Mass defect ×931   MeV

Binding energy = 0.00335 ×931   MeV

Binding energy = 3.11885 MeV

Means binding energy of neutron present in nucleus is 3.11885 MeV.

Answer:11

Explanation:

ANSWER:because of GRAVITY constant

Explanation:

Answer:

GIVEN:

Mass of object = 5 kg

Speed of object = 20 km/hr

To FIND:

Momentum of the object

Concept:

Momentum is actually an index of Inertia of Motion of a particle. In other words , it's the PRODUCT of mass and velocity of the Object.It's an vector QuantityIt has both directions and magnitude.Higher the momentum, higher will be the Inertia.

Calculation:

Velocity has to be taken in m/s unit.

20 km/hr = 20 × (5/18) = 5.55m/s

Momentum = Mass × Velocity

=> Momentum = 5 × (5.55)

=> Momentum = 27.77 kg m/s

So final answer :

Momentum = 27.77 kg m/s

Explanation:

multipolymer is the GREATEST POLYMER