second law of physics

. The container was opened on June 1st, only 0.5 gram of the isotope remind. The half life of the isotope is (1)30 days (2) 25 days (3) 40 days (4) 10 days 3. Identify the reaction which does not belong to the group with respect to order given (1) dissociation of hydrogen halide on gold s..

The physical behaviour of gases (for a given mass) is determined by three variables : (i) volume V (ii) pressure P (iii) temperature T Pressure-Volume Relationship or Boyle's Law It states that the volume of a given mass of dry g..

Resistors are classified as linear and nonlinear. A linear resistor is one which obeys a law discovered experimentally in case of metallic conductors, by a German physicist, George Simon Ohm in 1828. According to Ohm's law, "The electric current through a conducto..

The gas laws explain the physical behaviour of gases, and seek to establish a relationship among the factors that influence this behaviour. Factors that cause variation in the properties of gases are : 1. Pressure of Gas : It is the ratio of the force the gas exerts on the..

Usually a metallic conductor has a constant value for its resistance 'R' when other physical conditions remain the same. That is, in such metallic cpnductors the current (i) passing through conductor will be directly proportional to the potential difference (V) applied across its e..

^ such that the direction of tis at right angles to the direction of E? H . Then the needle will rotate through an angle 0 and come to rest with its axis along the direction of the resultant magnetic induction T? (Fig. 13.7). In the equilibrium position, the needle is acted upon by two couples: (i)..

Rutherford and Soddy. found that the rate at which a particular radioactive material disintegrates is independent of the physical or chemical conditions. It depends upon the number of radioactive atoms present at that instant. The law states that, "the rate of radioactive..

In 1913, British physicist H.J.G. Moseley generated characteristic X-rays for as many as 38 elements by using them as targets for electron bombardment in discharge tube of his own design. He noted that if, for a given spectral line say K a , the square root of the frequency is plotted agains..

">Consider a gas enclosed in a cylinder fitted with a frictionless and non-conducting piston. Let the walls of the cylinder except the bottom be thermally insulated. Let the gas be supplied an amount 8Q of heat. This heat energy shall cause (i) an increase in the temperature of the gas (ii..

(ii) The point of application C of the resultant R divides the line AB joining the points of application of the forces P and Q internally in the inverse ratio of the forces. That is, (iii) The direction of the resultant is the same as the direction of eithe..