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Ask QuestionPosted by Shweta Mishra 7 years, 3 months ago
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Posted by Adi Sharma 7 years, 3 months ago
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Sneha Agrawal 7 years, 3 months ago
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Rudra Shukla 7 years, 3 months ago
Kamlesh Kumar Singh 7 years, 3 months ago
Posted by Saurav Katare 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
- Contact Force: Contact force is a force which can produce its effect only by making a contact with object. Following are the contact forces:
Muscular Force: It is the force applied by muscles of humans or animals. A bullock is able to pull a cart because of muscular force. The bullock needs to be harnessed to the cart for applying the force.
- Friction: When one surface is moving over another surface, a force comes into play and opposes their relative motion. This force is called friction or force of friction. Friction always opposes motion because it acts in opposite direction to motion. Force of friction arises due to contact between two surfaces. If there is no contact between two surfaces there would be no friction.
- Non-contact Force: The non-contact force is a force which can produce its effect without making a contact with object. Following are the non-contact forces:
- Magnetic Force: The force applied by a magnet is called magnetic force. A magnet can exert its force on an object even from a distance and does not need to touch that object.
- Electrostatic Force: It is the force applied by a charged body on another charged or non-charged body. When you brush a comb in your hairs and then bring the comb near small bits of paper, the comb attracts the bits of paper. This happens because of electrostatic force.
- Gravitational Force: Every object in the universe exerts a force on another object. This force is called gravitational force. It is the gravitational force of various celestial bodies which keeps them in their position in the space.
Posted by Sakshi Sharma 7 years, 3 months ago
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Posted by Sarthak Agrawal 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
In triangle ABC,
AB = BC = AC
∴ ∠CAB = ∠ B = ∠BCA = 60°.........(i)
Similarly ΔADC is an equilateral triangle,
∴ ∠DAC = ∠ D = ∠DCA = 60°...........(ii)
From (i) and (ii) we get
∠A = ∠ DAC + ∠CAB = 60° + 60°
∠A = ∠ DAC + ∠CAB = 120°
Similarly ∠C = 120°
Hence, ∠A = 120°, ∠B = 60°, ∠C = 120° and ∠D = 60°.
Posted by Rustam Kumar 7 years, 3 months ago
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Divya Saini 7 years, 3 months ago
Tanu Dubey 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
- According to the Doctrine of Lapse designed by Lord Dalhousie, if an Indian ruler died without a male successor, the kingdom would end and hence would come under the control of the Company.
- Many kingdoms were occupied by the Company by implementing this doctrine.
- Sambalpur, Satara, Nagpur, Udaipur and Jhansi were annexed.
- At last, Awadh was also annexed by the British which made people furious and led to the Great Revolt of 1857.
Posted by Jayachandran Kb 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
The bob of a pendulum moves to and fro along the same path and passes through the mean position. This type of motion is called oscillatory motion. The maximum displacement of a pendulum, that is, the displacement between the mean position and the extreme position, is called its amplitude. The time taken by an oscillating pendulum to make one complete oscillation is called its time period.
Posted by Aashu Kumar 7 years, 3 months ago
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Posted by Meraj Siddique 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Muscular force is the force applied using parts of the body like arms or legs. It is force that results due to the action of muscles, and is a contact force, since there is a contact between the surfaces. Muscular force is needed whenever movement of the body occurs. Walking, lifting, getting up from a chair, crossing a leg, etc. all require muscular force.
Posted by Rishu Raj 7 years, 3 months ago
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Ishant Rathore 7 years, 3 months ago
Posted by Akul Sharma 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
We need a parliament for making new laws in the country and changing and abolishing existing laws.
We need a Parliament controls the executive organ of the government.
Public money can be spent only with parliamentary sanction in this way Parliament controls the finances of the government.
Posted by Rohit Yadav 7 years, 3 months ago
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Gaurav Kumar 7 years, 3 months ago
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Sia ? 6 years, 5 months ago
Let the number be 100
Increase in it = 10%
Increase number {tex} = 100 + \frac{{10}}{{100}} \times 100 = 110{/tex}
Now decrease = 10% of {tex}110 = \frac{{10}}{{100}} \times 110 = 11{/tex}
New number is 100 - 11 = 89
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Ishinder Singh Rajpal 7 years, 3 months ago
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Arnika Gautam 7 years, 3 months ago
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Yash Satpute 7 years, 3 months ago
1Thank You