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  • 1 answers

Yogita Ingle 5 years ago (2577571)

There are three modes of heat transfer.

  1. Conduction: Heat conduction is a process in which heat is transferred from the hotter part to the colder part in a body without involving any actual movement of the molecules of the body. Heat transfer takes place from one molecule to another molecule as a result of the vibratory motion of the molecules. Heat transfer through the process of conduction occurs in substances which are in direct contact with each other. It generally takes place in solids.
  2. Convection: In this process, heat is transferred in the liquid and gases from a region of higher temperature to a region of lower temperature. Convection heat transfer occurs partly due to the actual movement of molecules or due to the mass transfer. For example. Heating of milk in a pan.
  3. Radiation:  It is the process in which heat is transferred from one body to another body without involving the molecules of the medium. Radiation heat transfer does not depend on the medium. For example: In a microwave, the substances are heated directly without any heating medium.
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Gopika Satheesh 5 years ago (10100302)

1.  In ΔLMN, ∟L = 50°and ∟N= 60°. If ΔLMN is similar to ΔPQR, then find ∟Q. (AI CBSE 2009) 2.  If areas of two similar triangles are in the ratio 25:64, write the ratio of their corresponding sides. (AI CBSE 2009) 3.  D, E and F are mid points of sides BC, AC and AB respectively of triangle ABC. Find ar(ΔDEF)/ar(ΔABC). ( AI CBSE 2008) 4.  If one diagonal of a trapezium divides the other diagonal in the ratio 1:2. Prove that one of the parallel sides is double the other. (CBSE 2010) 5.  ABC is a right triangle, right angled at A, and D is the mid-point of AB. Prove that BC2 = CD2 + 3BD2. (AI CBSE 2009 C) 6.  If the diagonals of a quadrilateral divide each other proportionally, prove that it is a trapezium. (CBSE 2008) 7.  Triangle ABC is right angled at B and D is the mid-point of BC. Prove that:- AC2 = 4AD2 . 3AB2.(AI CBSE 2008 C) 8.  E is a point on the side AD produced of a parallelogram ABCD and BE intersects CD at F. Show that ΔABC is similar to ΔCFB. (AI CBSE 2008)
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Yogita Ingle 5 years ago (2577571)

  Iris: It controls the amount of light entering the eye.
 Pupil: It controls the illumination in the eye.

Retina: It is a delicate membrane having a large number of light-sensitive cells called 'rods' and 'cones' which respond to the intensity of light and colour of objects respectively.
Optic nerve: It conveys the image formed on the retina to the brain.

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Yogita Ingle 5 years ago (2577571)

Let us assume that T>0
Heat lost by water= heat gained by ice to melt+ heat gained by water formed from ice
⇒300×1×(50−T)=150×80+150×1×(T−0) 
⇒T=6.7C
⇒T=6.7C
Hence our assumption that T>0C  

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  • 3 answers

Angel Agarwal 5 years ago (10182097)

Machine language

Mamtesh Mamtesh 5 years ago (8547871)

Hay

Ansari Aayesha 5 years ago (8567470)

Main= English others= japanese,
  • 3 answers

Chiranjeev ___ 5 years ago (9494613)

What is the meaning of arthshast

Shubham Singh 5 years ago (10144711)

Hhugh

Amulya Vl Amulya Vl 5 years ago (9114943)

Class 4
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Vengambakkam Venkat 5 years ago (9558670)

A cupboard with shelves (or) drawers used for storing things
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Yogita Ingle 5 years ago (2577571)

Thermus aquaticus bacterium is used in recombinant DNA technology to provide the enzyme Taq Polymerase which is thermostable enzyme which can even work which remain active during the high temperature induced denaturation of double stranded DNA. It is used in PCR to amplify the DNA segments.

  • 2 answers

Kartik Nandal 5 years ago (9941579)

22

Jaivanth Reddy 5 years ago (9534388)

Sum of exterior and opposite interior is the unkown interior
  • 2 answers

Deepanjali Pareshwar 5 years ago (10308225)

Bolshevik dal k neta vladimeer lenin tha.

Shailza Dahiya 5 years ago (9848691)

Bolshevik Dal ka Neta Lelen tha
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Lakshya Uchit 5 years ago (10044422)

-2x^-15
Did
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Yogita Ingle 5 years ago (2577571)

Santosh Yadav: She is an Indian woman.  She was the first women, in the world to scale the Mount Everest two times in the same cullender year. She was also Successful in two major attempts namely, IAS and mountaineering. She is now an officer in Indo-Tibetan Border police force. 

Maria Sharapova: She is a Russian professional champion tennis player. Her rank in tennis tournament is number three.   Olympic silver medalwas won by her in the year of 2012. She made her breakthrough at the age of only 17 years.

Dr
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??? ?? 5 years ago (10184380)

doctor 1. Dr is a written abbreviation for doctor. ... ... Dr is used as a written abbreviation for drive when it is part of a street name.
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Yogita Ingle 5 years ago (2577571)

National Party: A party that secures at least six per cent of total votes in Lok Sabha elections or Assembly elections in four States and wins at least four seats in the Lok Sabha is recognised as a national party.

According to this classification, there were six national recognised parties in the country in 2006.

  1. Indian National Congress (INC): This is popularly known as the Congress Party. This is one of the oldest parties of the world and was founded in 1885. The Congress Party had played a dominant role in Indian politics at the national and state level for several decades after India’s Independence. Since the first general elections in 1952, the Congress party had been in power continuously till 1977. After that, it came back to power in 1980 and remained till 1989. The Congress Party once again came back to power in 1991 for another five years. Congress Party came back in power in 2004 and completed two terms in office, i.e. ten years.
  2. Bharatiya Janata Party (BJP): This party was founded in 1980 by reviving the erstwhile Bharatiya Jana Sangh. Building a strong and modern India is the main goal of this party. The BJP wants to promote cultural nationalism (or ‘Hindutva). This party wants full territorial and political integration of Jammu and Kashmir with India, a uniform civil code and a ban on religious conversions. It support base increased significantly in the 1990s. The Party came to power in 1998 and remained in power till 2004. This party stormed back to power in centre in 2014, and was re-elected in 2019 with absolute mejority.
  3. Bahujan Samaj Party (BSP): This party was formed in 1984 under the leadership of Kanshi Ram. The party seeks to represent and secure power for the bahujan samaj which includes the dalits, adivasis, OBCs and religious minorities. This party has good presence in Uttar Pradesh and has been in power in UP for a couple of terms.
  4. Communist Party of India - Marxist (CPI-M): This party was founded in 1964. Marxism- Leninism is the main philosophy of this party and it supports socialism, secularism. The party enjoys strong support in West Bengal, Kerala and Tripura, especially among the poor, factory workers, farmers, agricultural labourers and the intelligentsia. The CPI has off late slipped in its hold over public and has lost power in West Bengal and Kerala.
  • 1 answers

Gaurav Seth 5 years ago (2898529)

asinθ + bcosθ = c
taking square both sides,
(asinθ + bcosθ)² = c²
⇒a²sin²θ + b²cos²θ + 2absinθ.cosθ = c² --------(1)

Let acosθ - bsinθ = x
Squaring both sides
(acosθ - bsinθ)² = x²
⇒a²cos²θ + b²sin²θ -2absinθ.cosθ = x² ------(2)

Add equation (1) and (2),
a²sin²θ + b²cos²θ +2abinθ.cosθ + a²cos²θ + b²sin²θ -2absinθ.cosθ = c² + x²
⇒(a² + b²)cos²θ + (a² +b²)sin²θ = c² + x²
⇒(a² + b²)[sin²θ + cos²θ ] = c² + x²
⇒(a² + b²) = c² + x² [∵ sin²x + cos²x = 1 ]
⇒(a² + b² - c²) = x²
Take square root both sides,

Hence, acosθ - bsinθ = 

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Yogita Ingle 5 years ago (2577571)

Houses come in all shapes and sizes. The style of a house is greatly influenced by its location, when it was built and if it has undergone renovations. Explore Victorians, colonials, Greek and Spanish revivals, foursquares, Federals, bungalows and other design motifs.

  • 3 answers

.... .... 5 years ago (9982496)

What happened to you??

Bhavishya Yadav 5 years ago (10113632)

????

.... .... 5 years ago (9982496)

No,this question is of economics.
  • 4 answers

Rishi Chandel 5 years ago (9320782)

In simple words,it is a type of chemical reaction in which precipitation form or we can say insoluble substances forms is called precipitation reaction.

Gopika Satheesh 5 years ago (10100302)

precipitation is the process behind the condensation of water vapour in the atmosphere that falls down under the influence of gravity. Rain and snow are the results of these phenomena.

Yogita Ingle 5 years ago (2577571)

It is a chemical reaction in which you mix two solutions of two ionic substances and a solid ionic substance (a precipitate) forms.

For example, precipitation occurs when a part of the atmosphere saturates itself with water vapour and when the right temperature comes its condenses and precipitates. The two processes which make the air saturated are the cooling of air molecules and the addition of water vapour.

Anshul . 5 years ago (10016687)

?
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Bhoomika.Y.K K 4 years, 8 months ago (11035324)

Thanks
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Yogita Ingle 5 years ago (2577571)

Electrical Transmission Chemical Transmission
It occurs at electric synapse. Synaptic cleft may or may not be present. At electrical synapses, electrical current can flow directly from one neuron into the other across these synapses. Impulse transmission across an electrical transmission is always faster. It occurs at chemical synapse. Synaptic cleft is present. At chemical synapse, neurotransmitter from pre-synaptic neurons transfer to post-synaptic neurons leading to transmission of impulse. Chemical transmission is slower.

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