Solve this:

Solve this: waRl.L' potential is completely into the kinetic of the object just before it hits the ground. This law restricted for a conservative force should not bc confused with the general law of consewation of enerky of an isolated system [which is the basis of the First Law of Thermodyn amicsJ. The concept of is central to physics and the expressions for can bc written for every physical system. When all forms of cncr4' e.g., heat. mechanical cncrO•, electrical enerW etc.. are counted. it turns out that is conserved. The general law of conservation of is true for all forces and for any kind of transformation bctwccn different forms of energy _ In the falling object example. if you include the effect or air resistance during the fall and see the situation after the object hits the ground and Stays there. the total mechanical is obviously not conserved. general law of consetvation. however. is still applicable. The initial potential Of Stone gets into Other of : heat and sound. (Ultimately. sound after it is absorbed becomes heat.) The total energy the System (Stone plus the surroundings) remains unchanged. The law of conservation of energy is thought to be valid across all domains of nature. from the microscopic to the macroscopic _ It is routinely applied in the analysis or atomic. nuclear and elementary particle processes. At the other end, all kinds of violent phenomena occur in the universe all the time. Yet the total eneræ,' of the universe (the most ideal isolated system possible is believed to remain unchanged. Until the advent of Einstein's theory of relativity. the law of conservation of mass was regarded as another basic conservation law of nature. Since matter Was thought to be indestructible. It was (and still is) an imponant principle used. for example. in the analysis of Chemical reactions, A Chemical reaction iS basically a rearrangement of atoms among different binding energy of the reacting molecules is less than thc total binding energy of the product molecules. the difference appears as heat and the reaction iS exothermic. opposite is true for encr4' absorbing (endothermic) reactions. However. since the atoms arc merely rearranged but not destroyed. the total mass ofthe reactants is the Same the total Of the products in a chcmical reaction. changes in thc binding are too small to be measured as changes in mass. According to Einstein's theory. mass m is equivalent to E given by the relation E= mc2, where c is spccd of light in vacuum. In a nuclear process mass gets converted to (or Vice-versa). This iS the Which is released in a nuclear power generation and nuclear explosions. Ramu sir c.v Raman 11888-1970) 07 Nov 1888 in College. Madras. After finishing Iris educaunn be joined financial selvices of (he While in Kolkata, he working nn his a riariun for Cultivariun or Science founded hy Or. Maner«lra Lal Sirkar during his twening ultrasonies, cliliraetm and s as Raman Raman Effect deals will' scattering of light hy molecules of a medium He spent his years al Bangalore. firs( al Indian Institute of Science and at Raman