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2. The temperature of a silver bar rises by 10.0°C when it absorbs 1.23 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of silver.
1. An auditorium has dimensions 10.0 m x 10.0 m x 5.0 m. How many molecules of air fill the auditorium at 30.0°C and a pressure of 101 kPa?
How long will it take a 50W heater to melt 100g of ice at 0 celsius degree

15. When a wave hits a material interface , it can be absorbed , reflected or transmitted by the second material . describe what happens in each of these cases ?


What is energy in anamolous zeeman effect.
What is energy in normal zeeman effect.
What is second maxwell equation.

What is first maxwell equation.


 Two systems A and B are arranged so that their total volume is constant, but their individual volumes can change. Calculate the standard deviation of fluctuations in the volume in system A for constant energy. (Hint: see section 4.5 for the analogous calculation of the fluctuation ill energy.)


A nozle is a deviee for incressing the velocity afa steadily lowing stream. At

the inlet toa certain nozzle. the enthalpy of the tluid passing is 3000Mkg and
the velocity is 60 ms. At the dischare end, the enthalpy is 2762 k The
nozzle is horizontal and there is negigible heat loss from it. (a) Find the velocity
al exit fron the nozzle. (b) Ir the inlet arca is 0.1 m and the specifie volume at
inlet is 0.187 m/kg. find the mass flow nie. (c) If the pecific volume at the
nozzle exit is 0.498 m'kg. ind the exit area of the nozzle.
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