# THERMAL EQUILIBRIUM

Jun 17th, 2015
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Temperature - The measure of the degree of hotness of an object. Measured in SI unit Kelvin, K. A hot object is at a higher temperature than a cold object. Heat-Form of energy, measured in Joules, J. Heat is transferred from hotter object (higher temperature) to colder object (lower temperature)

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Question .1. State Newtons Second Law of motion both in words and in Equation form. Under what condition does this equation becomes F = ma? Question .2. What is S I unit of force and how is it related to the CGS unit of force?Question .3. Differentiate between mass and weight. Question .4. Write the S I unit of mass and weight. Question .5. A force is applied on (i) a rigid body and (ii) non rigid body. How does the effect of force differ in the two cases ? Question .6. Define (i) Work(ii) Power and(iii) Energy. Question .7. Write the expression for the work done by constant force acting on a body, which gets displaced from its initial position in a direction different from the direction of force.Or,How can the work done be measured when force is applied at an angle to the direction of displacement ?Question .8. When a body moves in a circular path how much work is done ? Or, State the amount of work done by an object when it moves in a circular path for one complete rotation. Give reason to justify your answer. Question .9. How is work done related to the applied force ? Question .10. What should the angle between force and displacement be to get the (i) minimum work (ii) maximum work ? Question .11. Give an example when work done by force acting on a body is zero even though the body gets displaced from its initial position by the application of the force. Question .12. A truck driver starts off with his loaded truck. What are the majo

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