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1. (i) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? (ii) A candle is burning in a well-insulated room. Taking the room (the air plus the candle) as the system, determine if there is any heat transfer during the burning process. Explain how? 2. Explain the following, related to physical insight to internal energy (i) Translation energy (ii) rotational kinetic energy (iii) vibrational kinetic energy (iv) Internal energy (v) spin energy (vi) sensible energy (vii) latent energy (viii) chemical energy (ix) nuclear energy (x) thermal energy 3. What is the temperature of heated air at 150°C in °F, K and Rankine. 4. A manometer is used to measure the pressure in a tank. The fluid inside the manometer specific gravity is 0.85 and the absolute pressure within the tank is 100.6 kPa. Calculate the column height in mm. Take atmospheric pressure is 96 kPa. 5. Consider a differential manometer whose ends are connected to two different pipes A and B and containing different liquids at different levels. Let us assume that the pressure at point A is more than that at point B. Oil is in pipe A whose density 800 kg/m³ shows a difference in mercury levels as 100 mm. The height of oil between center of pipe A to the mercury level in left limb is 200 mm. Methanol (relative density = 0.791) is in pipe B and the height of Methanol between center of pipe B and mercury level in the right limb is 5 cm. Calculate the difference in pressures at the two points A and B.

1. (i) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? (ii) A candle is burning in a well-insulated room. Taking the room (the air plus the candle) as the system, determine if there is any heat transfer during the burning process. Explain how? 2. Explain the following, related to physical insight to internal energy (i) Translation energy (ii) rotational kinetic energy (iii) vibrational kinetic energy (iv) Internal energy (v) spin energy (vi) sensible energy (vii) latent energy (viii) chemical energy (ix) nuclear energy (x) thermal energy 3. What is the temperature of heated air at 150°C in °F, K and Rankine. 4. A manometer is used to measure the pressure in a tank. The fluid inside the manometer specific gravity is 0.85 and the absolute pressure within the tank is 100.6 kPa. Calculate the column height in mm. Take atmospheric pressure is 96 kPa. 5. Consider a differential manometer whose ends are connected to two different pipes A and B and containing different liquids at different levels. Let us assume that the pressure at point A is more than that at point B. Oil is in pipe A whose density 800 kg/m³ shows a difference in mercury levels as 100 mm. The height of oil between center of pipe A to the mercury level in left limb is 200 mm. Methanol (relative density = 0.791) is in pipe B and the height of Methanol between center of pipe B and mercury level in the right limb is 5 cm. Calculate the difference in pressures at the two points A and B.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1. (i) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? (ii) A candle is burning in a well-insulated room. Taking the room (the air plus the candle) as the system, determine if there is any heat transfer during the burning process. Explain how? 2. Explain the following, related to physical insight to internal energy (i) Translation energy (ii) rotational kinetic energy (iii) vibrational kinetic energy (iv) Internal energy (v) spin energy (vi) sensible energy (vii) latent energy (viii) chemical energy (ix) nuclear energy (x) thermal energy 3. What is the temperature of heated air at 150°C in °F, K and Rankine. 4. A manometer is used to measure the pressure in a tank. The fluid inside the manometer specific gravity is 0.85 and the absolute pressure within the tank is 100.6 kPa. Calculate the column height in mm. Take atmospheric pressure is 96 kPa. 5. Consider a differential manometer whose ends are connected to two different pipes A and B and containing different liquids at different levels. Let us assume that the pressure at point A is more than that at point B. Oil is in pipe A whose density 800 kg/m³ shows a difference in mercury levels as 100 mm. The height of oil between center of pipe A to the mercury level in left limb is 200 mm. Methanol (relative density=0.791) is in pipe B and the height of Methanol between center of pipe B and mercury level in the right limb is 5 cm. Calculate the difference in pressures at the two points A and B.
Transcribed Image Text:1. (i) A can of soft drink at room temperature is put into the refrigerator so that it will cool. Would you model the can of soft drink as a closed system or as an open system? (ii) A candle is burning in a well-insulated room. Taking the room (the air plus the candle) as the system, determine if there is any heat transfer during the burning process. Explain how? 2. Explain the following, related to physical insight to internal energy (i) Translation energy (ii) rotational kinetic energy (iii) vibrational kinetic energy (iv) Internal energy (v) spin energy (vi) sensible energy (vii) latent energy (viii) chemical energy (ix) nuclear energy (x) thermal energy 3. What is the temperature of heated air at 150°C in °F, K and Rankine. 4. A manometer is used to measure the pressure in a tank. The fluid inside the manometer specific gravity is 0.85 and the absolute pressure within the tank is 100.6 kPa. Calculate the column height in mm. Take atmospheric pressure is 96 kPa. 5. Consider a differential manometer whose ends are connected to two different pipes A and B and containing different liquids at different levels. Let us assume that the pressure at point A is more than that at point B. Oil is in pipe A whose density 800 kg/m³ shows a difference in mercury levels as 100 mm. The height of oil between center of pipe A to the mercury level in left limb is 200 mm. Methanol (relative density=0.791) is in pipe B and the height of Methanol between center of pipe B and mercury level in the right limb is 5 cm. Calculate the difference in pressures at the two points A and B.
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