if A is a non-singular matrix of odd order prove that |adj A| is positive​

Answer:

Homologous series is a series of compounds with similar chemical properties and some functional group differing from the successive member by CH2. Carbon chains of varying length have been observed in organic compounds having the same general formula. Such organic compounds that vary from one another by a repeating unit and have the same general formula form a series of compounds. Alkanes with general formula CnH2n+2, alkenes with general formula CnH2n and alkynes with general formula CnH2n-2 form the most basic homologous series in organic chemistry.

Answer:

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अगर आप स्वयं के साथ हैं तो किसी साथी की जरुरत नहीं है। इंसान सामाजिक प्राणी है उसको साथ की आवश्यकता पडती ही है। जब आप हर तरफ से नाउम्मीद हो जाएँ और कोई आपका साथ नहीं दे रहा हो, उस वक्त जो आपके काम आए वो ही आपका सच्चा साथी है।

Answer:

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Explanation:

इंसान सामाजिक प्राणी है उसको साथ की आवश्यकता पडती ही है। जब आप हर तरफ से नाउम्मीद हो जाएँ और कोई आपका साथ नहीं दे रहा हो, उस वक्त जो आपके काम आए वो ही आपका सच्चा साथी है।

Answer:

police logo colour is red and blue because of blue colour indicates peace and red colour indicates justice

Answer:

Mass = 5kg

Specific heat = 4200jkg

initial temperature = 20°C

Final temperature = 80°C

That is final - initial temperature =(T1 ) - (T2)

= 80 - 20 = 60

Q = mS∆T

Q = 5×4200×60 = 1,26,000kJ

Answer:

• Change in internal energy is 1260000 KJ.

Explanation:

Topic :

• Thermodynamics

According to the Question

It is given that,

• Specific heat ,s = 4200 J/KgK
• Mass of water ,m = 5kg
• Initial temperature , Ti = 20°C
• Final temperature ,Tf = 80°C

we have to calculate the change in internal energy .

Firstly we change the unit here

Conversion of Unit :-

→ Ti = 20+ 273 = 293 K

→ Tf = 80 + 273 = 353K

Now, calculating the change in temperature

• ∆T = Tf - Ti

by putting the value we get

→ ∆T = 353K - 293K

→ ∆T = 60 K

From the result we conclude that "heat is absorbed by water "

Now, calculating the change in internal energy

• Q = ms∆T

by putting the value we get

→ Q = 5 × 4200 × 60

→ Q = 4200 × 300

→ Q = 1260000 KJ

• Hence, the change in internal energy is 1260000 KJ .