what's the difference between chapter 7 and chapter 11

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Velocity of Sound in Different Gases - As seen from equation (1-28), the velocity of sound in a gas depends on g , the ratio of the principle specific heats of the gas. This, in turn, depends on the atomicity of the gas. An approximate equation connecting g and the degrees of freedom is W..

121x 2 - 25y 2 = (11x) 2 - (5y) 2 = (11x + 5y) (11x - 5y) [Using the identity a 2 -b 2 =(a-b)(a+b)] Factorise: (5a + 6b) 2 - 49b 2 Let x = 5a + 6b Then the given expression = (x) 2 - (7b) 2 = (x + 7b) (x - 7b) Re-substitutin..

Consider two points in an electric field. If a free test charge +q o was placed in the field, it would flow from b to a. So we say b is at higher potential. The electric field does negative work in moving the test charge q o from a to b. If a and b are two points in an electric f..

The principle of homogeneity of dimensional equation is used to derive a relation between various physical quantities. To derive a physical relation, the dependent factors of a given physical quantity is found. Assuming its dimensions in terms of these factors, the final dimensional equation is wri..

If M is the mass of a body around which a field exists and m is the test mass placed at a distance r from M in this field then, Potential energy per unit mass is gravitational potential (..

Root word: but C=O preferred over the OH group (so lowest number) Prefixes are: methyl and hydroxy Primary suffix: ane Secondary suffix: one Name of the compound is: 3-hydroxy-3-methylbutan-2-on..

Question: Solve the following equation: Answer: 5(3x+5) = 2(2x-1) (by cross-multiplication) 15x-4x = -2-25 11x = -27 ..

(higher potential to lower potential). Note that the free electrons flow in the direction opposite to the conventional current. For electrons to be driven through a resistance, there has to be a potential difference across its ends. Work is done by the electrical force due to this potenti..