I eneegy is present in the gno (prob a15, in joules? 17. A 1.00 kg piece of meta
ID: 1864686 • Letter: I
Question
I eneegy is present in the gno (prob a15, in joules? 17. A 1.00 kg piece of metal initially at 100°C in thrown into an insulated container holding 4.00 L water initially at 'C. After a short time, the firnal temperature of both is 12.0 C. (ignore heat tramsferred to the container) a) Find the heat absorbed by the water. b) Find the specific heat of the metal. (2) 18. Water is stored in an open storage tank. The absolute pressure in the tank above the liquid is 1.0 atm. The water level is 8m above the base of the tank. What is the instantaneous velocity of a fluid jet when a 0.5cm diameter orifice is opened at point A. The opening is 0.8m above the base. Consider vi 0 at the instant the opening is made. (1)Explanation / Answer
17.
Mass of water= volume* density= (4*10^-3)*10^3
m= 4 kg
Energy absorbed by water
Q= mc(T2-T1)
= 4*4186* (12-0)
= 200928 J
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b.
According to principle of calorimetry
Heat energy dissipated by the metal= heat energy absorbed by wayer
1* c* (100-12)= 200928
c= 2283.27 J/kg/°C
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Do comment in case any doubt..goodluck
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