10 marks Water 5 kg 1 m 1 MPa Figure Q2. 1 a Explain the meaning of the statement the specific heat capacity of ice is 2100 J kg 1K1.
Layers Of The Atmosphere Physical Geography
View Q2pdf from CHEM PHYSICAL C at UET Taxila.
. The rate of flow of oil is 1 kgs. Why do breezes travel the direction they do. When the air temperature is 25C the pressure gage reads 210 kPa.
21F-1 OL 5 Weather Hazards. Air at 150kPa and 323K is filled in a rigid vessel of 005m3 capacity. With fewer air molecules above there is less pressure from the weight of the air above.
If 30KJ of heat is added then find the final temperature. Above every square inch on the surface of the Earth is 147 pounds of air. This creates a high pressure area.
10 marks ii Calculate the final pressure. Explain why when the temperature of the air is increased to 320 K. Molecules of a gas move randomly.
Air Standard Cycle 3. Temperature and pressure differences. Heat Index and Wind Chill Q1.
The volume of the tire is 0025 m³ and 3 the atmospheric pressure is 100 kPa. Explain the difference in temperature of air. In a sealed container they exert a force when they collide with the container walls and this applies pressure to the container.
State and explain the effect on the temperature rise of one factor that has not been taken into account in the. So Wp Q2-Q1 COPhp Q2 WR Q2 Q2-Q1 Where hp-heat pump. Consider a parallel-flow heat exchanger which is used to cool oil from 70C to 40C using water available at 30CThe outlet temperature of the water is 36C.
The difference between the two measurements is then explained relatively simply and thus also the choice of the appropriate measurement. A Explain the working of four stroke and two stroke petrol engine with neat diagram. A front is an imaginary line separating two contrasting air masses.
In areas with low temperature the air is cold and heavy so it sinks down. 10 marks b Figure Q2 a shows a 1 m2 container filled with 5 kg of water. The two points of the heat cycle at Q1 and Q2 are equalized when their respective degrees of freedom relative to the prevailing temperature are equal.
What direction does air pressure push on an object. Answer 1 of 5. Explain how rain is being created in the diagram above 5marks 3 Frontal rainfallWhen two air masses meet they do not mix readily due to differences in temperature and density.
High in the atmosphere air pressure decreases. Low pressure is associated with cloudy skies and wet weather. This reference pressure is the ideal or absolute vacuum.
When does it happen and why. Molecules of a gas move randomly. A refrigerator used for cooling in summer can be used as a heat pump for heating in the winter season.
Determine the efficiency of diesel engine Q5. That means air exerts 147 pounds per square inch psi of pressure at Earths surface. The specific heat of the oil is 22 kJkg K.
Derive the Tds relation in terms of change in temperature and volume. A refrigerator works between cold body temperature T1 and atmospheric temp Ta whereas the heat pump operates between hot body temp T2 and the atmospheric temperature Ta. A CO 2 PO 1 Explain the difference between saturated liquid and saturated vapor.
I Determine the initial temperature. Absolute pressure is a pressure that is relative to the zero pressure in the empty air-free space of the universe. Derive an expression for pressure ratio temperature ratio and efficiency for otto cycle.
This creates a low pressure area. I see it this way. Calculate the pressure of steam at a temperature of 500C and a density of 24 kgm using a the ideal gas equationb the van der Waals equation c the compressibility factor andd the steam table.
B List out the differences between SI. Air needs to be cooled to around -200 C to turn it into a liquid. The water is cooled to 30 C.
The pressure in an automobile tire depends on the temperature of the air in the tire. Equality Q1T1 Q2T2 in effect says. What is the difference between the critical point and.
Explain a mountain breeze. What changes temperature faster. If Mobile AL has a temperature of 100 F and relative humidity of 50 what is the apparent temperature.
Air - density 00012754 gmcm³ Water -. Derive the expression for work done in polytrophic process. Air conditioners cool and dehumidify.
Air stays a gas at room temperature where water stays a liquid in room temperature and becomes a gas only over 100 C. If Yuma AZ has a temperature of 110 F and relative humidity of 10 what is the apparent temperature THI in Yuma. Distribution of air pressure is influenced by the temperature of the area.
Is there a difference in the temperature of air among the three set-ups. Where temperature is high the air gets heated and rises. Definition of absolute pressure.
Assume air as an ideal gas. Calculation of Heat Exchanger. What type of winds do we have in the US mostly.
D EPED C O PY 359 Table 3. Pressure varies from day to day at the Earth. If the cylinders heat up enough their pressure will increase and they will explode.
Temperature of Water Vapor Trial Temperature of the Air C Initial room temperature Above the ice water Above the boiling water 1 2 3 Average Q1.
Cooling And Heating Equations
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