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first qn. easy one 1. a metal block of density 6000kg/m3 and mass 1.2 kg is suspended through a spring of spring constant 200N/m . the spring-block system is dipped in a water kept in a vessel.the water has a mass of 260 g & the block is at a heigt 40 cm above the bottom of the vessel if the support to the spring is broken,what willl be the rise in the temperature of water.s for block is 250 J/Kg-K . heat capacities of the vessel & the spring are negligible.... 2. a vessel of volume Vo contains an ideal gas at pressure po (o on foot) and temperature T . gas is continuosly pumped out of this vessel at a constant volume-rate dV/dt = r keeping the temperature constant..the pressure of the gas being taken out equaks the pressure inside the vessel. Find a)the pressure of the gas as a function of time.. b)the time taken before half of the original gas is pumped out.. 3. a unioform tube closed at one ned.contains a pallet of mercury 10 cm long .when the tube is kept vertically with the closed end upward,the lenthg of the air column trapped is 20 cm.find the lenght of the air column trapped when the tube is inverted so that the closed end goes down....(its an easy one)


first qn. easy one
 
1. a metal block of density 6000kg/m3 and mass  1.2 kg is suspended through a spring of spring constant 200N/m . the spring-block system is dipped in a water kept in a vessel.the water has a mass of 260 g & the block is at a heigt 40 cm above the bottom of the vessel  if the support to the spring is broken,what willl be the rise in the temperature of water.s for block is 250 J/Kg-K . heat capacities of the vessel & the spring are negligible....
 
 
2.  a vessel of volume Vo contains an ideal gas at pressure po (o on foot) and temperature T . gas is continuosly pumped out of this vessel at a constant volume-rate dV/dt = r keeping the temperature constant..the pressure of the gas being taken out equaks the pressure inside the vessel. Find
a)the pressure of the gas as a function of time..
b)the time taken before half of the original gas is pumped out..
 
 
3. a unioform tube closed at one ned.contains a pallet of mercury 10 cm long .when the tube is kept vertically with the closed end upward,the lenthg of the air column trapped is 20 cm.find the lenght of the air column trapped when the tube is inverted so that the closed end goes down....(its an easy one)
 
 
 
 


Grade:10

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