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Molecular Physics | Thermodynamics
plzzz... help in solving the following problem...,
the motor in a refrigerator has a power output of 200w. If the freezing compartment is at 270 k and the outside air is at 300 k, assuming ideal efficiency, calculate the maximum amount of heat that can be extracted from the freezing compartment in 10 minutes..
the motor in a refrigerator has a power output of 200w. If the freezing compartment is at 270 k and the outside air is at 300 k, assuming ideal efficiency, calculate the maximum amount of heat that can be extracted from the freezing compartment in 10 minutes..
Molecular Physics | Thermodynamics
What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4.18 J/g°C.
Molecular Physics | Thermodynamics
the ratio of velocity of sound in air at 4atm andthat at 1atm pressure would be
Molecular Physics | Thermodynamics
A 0.50 kg lump of ice at -18 ºC is dropped into a well-insulated beaker with 1.0 kg of water at 42
ºC in it. Calculate what the beaker contains once thermal equilibrium has been reached?
(The specific heat capacities for ice and water are 2220 J kg-1 K-1 and 4190 J kg-1 K-1 respectively. The latent heat of fusion for water is 333 x 103
J kg-1)
ºC in it. Calculate what the beaker contains once thermal equilibrium has been reached?
(The specific heat capacities for ice and water are 2220 J kg-1 K-1 and 4190 J kg-1 K-1 respectively. The latent heat of fusion for water is 333 x 103
J kg-1)
Molecular Physics | Thermodynamics
PuO2 has a density of 11.5 gcm-3 and a specific heat capacity of 330 J kg-1 K-1
. A fresh sample (i.e. one that has not decayed) of PuO2 produces 0.540 kW kg-1 of heat due to internal radioactive decay*. For this question we will consider a 1 cm^3 block of PuO2.
a) How much heat does a fresh 1 cm^3 block of PuO2 produce?
A fresh 1 cm^3 block sitting on the bench in the lab glows red hot at 700 K as it looses heat to
its environment.
b) If we place the block, initially at 700K, in a very well insulated container, its temperature will
start to rise. How long does it take for the block to reach 1000 K?
c) PuO2 melts at 2673 K and its latent heat of fusion is 245 kJ kg-1. If we place our block in a well insulated and heat resistant container when it is at 700 K, then how long is it before the whole block is melted?
. A fresh sample (i.e. one that has not decayed) of PuO2 produces 0.540 kW kg-1 of heat due to internal radioactive decay*. For this question we will consider a 1 cm^3 block of PuO2.
a) How much heat does a fresh 1 cm^3 block of PuO2 produce?
A fresh 1 cm^3 block sitting on the bench in the lab glows red hot at 700 K as it looses heat to
its environment.
b) If we place the block, initially at 700K, in a very well insulated container, its temperature will
start to rise. How long does it take for the block to reach 1000 K?
c) PuO2 melts at 2673 K and its latent heat of fusion is 245 kJ kg-1. If we place our block in a well insulated and heat resistant container when it is at 700 K, then how long is it before the whole block is melted?
Molecular Physics | Thermodynamics
A piston traps a certain mass of gas inside a cylinder. Initially the piston is halfway along the length of the cylinder. The piston is now moved towards the open end of the cylinder. The temperature of the gas remains constant. How are the density and the pressure of the gas affected by moving the piston? density pressure
Molecular Physics | Thermodynamics
How much does the air in a room whose length is 6.30 m, width 2.75 m and a height of 2.40 m on the air density is 1.273 kg /m^3.
Molecular Physics | Thermodynamics
The comet Encke has an aphelion distance of 6.1× 10^11m and perihelion distance of
5.1× 10^11m.The mass of the sun is 2.0 ×10^30kg.Find the speed of the comet at the
perihelion and the aphelion.
5.1× 10^11m.The mass of the sun is 2.0 ×10^30kg.Find the speed of the comet at the
perihelion and the aphelion.
Molecular Physics | Thermodynamics
hi ,my question is about convection!
Suppose that rod to the surface of a hollow cylinder connects . Temperature of the one side rod T1 and another side that attached to the cylinder isT2 . Temperature inside the cylindrical shell is T3., And T1 than T2and T3 from T2 is also greater.(T1>T2, T3>T2).and(T1>T3). find temperature at a point inside the cylindrical shell radius rx!long rod ,cylinder radius and conductivity and surface area of all the bars are clear.
I wait for your answer
Suppose that rod to the surface of a hollow cylinder connects . Temperature of the one side rod T1 and another side that attached to the cylinder isT2 . Temperature inside the cylindrical shell is T3., And T1 than T2and T3 from T2 is also greater.(T1>T2, T3>T2).and(T1>T3). find temperature at a point inside the cylindrical shell radius rx!long rod ,cylinder radius and conductivity and surface area of all the bars are clear.
I wait for your answer
Molecular Physics | Thermodynamics
9. What is the resultant temperature when 100 g of steam at 100° C is passed through 500 g of
ice at -20° C. the specific heat of water is 0.5 cal g-1° C
-1
.
ice at -20° C. the specific heat of water is 0.5 cal g-1° C
-1
.
