Monatomic gas: Using the law of equiportition of energy the average energy of molecule at temperature Total internal energy of a gas is Cv [Monatomic gas] = For an ideal gas. CP – CV = R CP = J/2 R Ratio of specific heats. Diatomic gases: Total internal energy [law of equiportition of energy] . Read more about Specific heat capacity[…]
There are two main types of thermodynamic processes: the reversible and irreversible. The reversible process is the ideal process which never occurs, while the irreversible process is the natural process that is commonly found in the nature. Introduction: When the system undergoes a change from its initial state to the final state, the system is Read more about Reversible and Irreversible Processes[…]
We can now resolve a vector A in terms of component vectors that lie along unit vectors î and ĵ. Consider a vector A that lies in x – y plane as shown in figure. We draw lines from the head of A perpendicular to the coordinate axes as in figure and get vectors A1 Read more about Motion in a Plane[…]
Generally we consider the reference as earth (i.e., stationary) and we will mention the velocities of all the bodies. So it will be relative earth as earth velocity will be “O” its original velocity will be equal to the relative velocity w.r.t earth. But in the relative velocity concept we will speak about the velocity Read more about Relative Velocity[…]
Any device removing heat from the cold place and adding it to a hotter place is called a “refrigerator”. It is essentially a heat engine running back-wards. In a heat engine, the working substance takes in heat from a body at a higher temperature, converts a part of it into mechanical work, and gives out Read more about Carnot’s Ideal Refrigerator[…]
Consider a plane inclined at an angle θ0 with horizontal. Let a projectile be projected from the foot of the inclined plane A, with velocity v and at an angle as shown in figure. The particle strikes the plane at point B. We want to find the range of projectile on the inclined plane which Read more about Projectile Motion on Inclined Plane[…]
Consider the equation: s = vₒt + ½ at² … (1) Where the letters have their usual meaning. Since it is meaningless to equate two quantities of different nature, e.g., mass to a length or a temperature to a force, it is evident that for the above equation to have any physical meaning, the three Read more about Principal of Homogeneity of Dimensions[…]
1. Manometer: A manometer is a tube open at both the ends and bent into the shape of a “U” and is partially filled with mercury. When one end of the tube is subjected to an unknown pressure p, the mercury level drops on that side of the tube and rises on the other so Read more about Pressure Measuring Devices[…]
1) Consider a vessel containing a fluid. Let the acceleration of vessel in vertical direction be, ay. Consider a small cylindrical element dy at a height y from bottomFrom figure, P₁ A – P₂A – mg = may P₁ A – P₂A = m (g + ay) But (P₁ – P₂) A2 = A dy (g Read more about Pressure in case of Accelerating Fluid[…]
In order to express quantitative magnitudes only approximately, the concept of order-of-magnitude is often employed. For example, the height of a small insect, say an ant, might be 8 x 10¯⁴ m ≈ 10¯³. We would say that the order of magnitude of the height of an ant is 10¯³m. Similarly, though the height Read more about Order of Magnitude Calculations[…]