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Posted by Neha Lodhe 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Free and fair elections refers to those elections which are not based on any political torture.It happen in a democratic and social way in which everybody have the right to choose their representatives according to their choices,their wishes and their will and the competing parties dont try to influence people to choose them as their representative as its a crime .
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Yogita Ingle 6 years, 3 months ago
MRT is the rate at which the units of one good have to be sacrificed to produce one more unit of the other good in a two goods economy. Suppose an economy produces only two goods X and Y. Further suppose that by employing these resources fully and efficiently, the economy produces 1X + 10Y. If the economy decides to produce 2X, it has to cut down production of Y by 2 units. Then 2Y is the opportunity cost of producing 1X. Then 2Y : 1X is the MRT.
Posted by Arvind Kumar 6 years, 3 months ago
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Posted by Md. Ashraf 6 years, 3 months ago
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Devansh Pandey 6 years, 2 months ago
Posted by Tauseef Raza 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
In a given state of technology when the units of variable factors are increased with the units of other fixed factors, the marginal productivity increases, it is called law of increasing returns
Posted by Abhishek Raj 6 years, 3 months ago
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Vivek Lather 6 years, 3 months ago
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Anjali Kumawat 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
Tut was just a teenager when he died. He became the king when he was 11 years old and died after ruling for 8 years.He was the last heir of a powerful family that ruled Egypt for centuries.
Posted by Aashik Uikey 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
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Private sector |
Public sector |
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The private sector refers to all those occupations and economic activities which are owned and controlled by individuals. |
The public sector refers to all those occupations and economic activities which are owned and controlled by the government. |
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The main aim of the private sector is to earn profits. |
The main aim is not only to earn profits but also to provide key services to the people at low costs. Hence, the public sector may incur loss. |
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Demand and supply of market forces determines the production activity. |
The government takes the major decisions in the production |
Posted by Siddharth Sharma 6 years, 3 months ago
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Posted by Dhairya Kesarola 6 years, 3 months ago
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Posted by Netik Verma 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
The work-energy principle states that an increase in the kinetic energy of a rigid body is caused by an equal amount of positive work done on the body by the resultant force acting on that body. Conversely, a decrease in kinetic energy is caused by an equal amount of negative work done by the resultant force.
Posted by Netik Verma 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
Let m and r be the respective masses of the hollow cylinder and the solid sphere.
moment of inertia of the hollow cylinder I1 = mr2
The moment of inertia of the solid sphere I2 {tex}= \frac { 2 } { 5 } m r ^ { 2 }{/tex}
We have the relation:
{tex}\tau = I a{/tex}
For the hollow cylinder, {tex}\tau _ { 1 } = I _ { 1 } \alpha _ { 1 }{/tex}
For the solid sphere, {tex}\tau _ { 2 } = I _ { 2 } \alpha _ { 2 }{/tex}
As an equal torque is applied to both the bodies, {tex}\tau _ { 1 } = \tau _ { 2 }{/tex}
{tex}\therefore \frac {\alpha_ { 2 } } { \alpha _ { 1 } } = \frac { I _ { 1} } { I _ { 2 } } = \frac { M r ^ { 2 } } { \frac { 2 } { 5 } M r ^ { 2 } } = \frac { 2 } { 5 }{/tex}
{tex}a _ { 2 } > a _ { 1 }{/tex} ….(i)
Now, using the relation:
{tex}\omega = \omega _ { 0 } + a t{/tex}
{tex}\omega \propto a{/tex} …(ii)
From equations (i) and (ii), we can write:
{tex}\omega _ { 2 } > \omega _ { 1 }{/tex}
Hence, the angular velocity of the solid sphere will be greater than that of the hollow cylinder.
Posted by Netik Verma 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
Let us consider the earth to be spherical mass of ‘M’ and radius ‘R’. A body of mass ‘m’ is placed initially on the surface and finally taken x distance deep into the earth.
We know acceleration due to gravity on the surface of earth is
This expression shows that acceleration due to gravity decreases as we go deep into the earth.
At the centre of earth x=R, so g’=0. Hence, the acceleration due to gravity at the centre of earth is zero (0).
Posted by Netik Verma 6 years, 3 months ago
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Posted by Piyush Bajaj 6 years, 3 months ago
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Posted by Aparna Sinha 6 years, 3 months ago
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Iram Hasan Hasan 6 years, 2 months ago
Sia ? 6 years, 3 months ago
cos 10 + cos 110 + cos 130 = (cos 10 + cos 110) + cos 130
= {tex}2cos \frac{(110+10)}{2}\times cos\frac{(110-10)}{2}{/tex} + cos 130 {using cos C + cos D}
= {tex}2cos \frac {(C+D)}{2}{/tex}{tex}\times{/tex} {tex}cos\frac {(C-D)}{2}{/tex}
={tex}2cos\frac{120}{2}{/tex} {tex}\times{/tex} {tex}cos\frac {100}{2}{/tex}+ cos (180 - 50) (As 130 = 180 - 50)
= 2 cos 60 {tex}\times{/tex} cos 50 - cos 50 (Using cos (180 - A) = - cos A)
= 2 {tex}\times{/tex}{tex}\frac{1}{2}{/tex}{tex}\times{/tex} cos 50 - cos 50 ( As cos 60 = {tex}\frac{1}{2}{/tex})
= cos 50o - cos 50o = 0
Posted by Ishwar Singh 6 years, 3 months ago
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Ritik Trivedi 6 years, 2 months ago
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Devansh Pandey 6 years, 2 months ago
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