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Attempt all questions. 1 liter= 10-3 m³ Cair-1.003 KJ/kg K g Clead=0.128 KJ/kg K Cwater =4.18 kJ/kg K 1-The time needed to raise the temperature of 320 gm of water by 90°C using a heater of 200 W, in seconds is C] A] 1.2 B] 0.9 D] 3.2 E] 0.6 0.1 2- A 1500-kg car travels at 30 m/s. The driver brakes to stop the car and all the kinetic energy is converted to heat in the four drums brake each of 8-kg. The rise in the temperature in the brake drums is (The specific heat of the brake drum is 448 J/kg °C) A] B] C] D] 55.9 E] 60.6 47.1 95.2 none 3-A 200.0 gm sample of a material at 80.0°C is mixed with 100.0 gm of water at 20.0°C. at the thermal equilibrium temperature 24.0°C. the specific heat of the material in KJ/KG°C is. A] 0.15 D] 1.6 B] E] C] 0.97 0.61 none

Attempt all questions. 1 liter= 10-3 m³ Cair-1.003 KJ/kg K g Clead=0.128 KJ/kg K Cwater =4.18 kJ/kg K 1-The time needed to raise the temperature of 320 gm of water by 90°C using a heater of 200 W, in seconds is C] A] 1.2 B] 0.9 D] 3.2 E] 0.6 0.1 2- A 1500-kg car travels at 30 m/s. The driver brakes to stop the car and all the kinetic energy is converted to heat in the four drums brake each of 8-kg. The rise in the temperature in the brake drums is (The specific heat of the brake drum is 448 J/kg °C) A] B] C] D] 55.9 E] 60.6 47.1 95.2 none 3-A 200.0 gm sample of a material at 80.0°C is mixed with 100.0 gm of water at 20.0°C. at the thermal equilibrium temperature 24.0°C. the specific heat of the material in KJ/KG°C is. A] 0.15 D] 1.6 B] E] C] 0.97 0.61 none

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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Attempt all questions. 1 liter= 10-3 m³ Cair-1.003 KJ/kg K g Clead=0.128 KJ/kg K Cwater =4.18 kJ/kg K 1-The time needed to raise the temperature of 320 gm of water by 90°C using a heater of 200 W, in seconds is C] A] 1.2 B] 0.9 D] 3.2 E] 0.6 0.1 2- A 1500-kg car travels at 30 m/s. The driver brakes to stop the car and all the kinetic energy is converted to heat in the four drums brake each of 8-kg. The rise in the temperature in the brake drums is (The specific heat of the brake drum is 448 J/kg °C) A] B] C] D] 55.9 E] 60.6 47.1 95.2 none 3-A 200.0 gm sample of a material at 80.0°C is mixed with 100.0 gm of water at 20.0°C. at the thermal equilibrium temperature 24.0°C. the specific heat of the material in KJ/KG°C is. A] 0.15 D] 1.6 B] E] C] 0.97 0.61 none
Transcribed Image Text:Attempt all questions. 1 liter= 10-3 m³ Cair-1.003 KJ/kg K g Clead=0.128 KJ/kg K Cwater =4.18 kJ/kg K 1-The time needed to raise the temperature of 320 gm of water by 90°C using a heater of 200 W, in seconds is C] A] 1.2 B] 0.9 D] 3.2 E] 0.6 0.1 2- A 1500-kg car travels at 30 m/s. The driver brakes to stop the car and all the kinetic energy is converted to heat in the four drums brake each of 8-kg. The rise in the temperature in the brake drums is (The specific heat of the brake drum is 448 J/kg °C) A] B] C] D] 55.9 E] 60.6 47.1 95.2 none 3-A 200.0 gm sample of a material at 80.0°C is mixed with 100.0 gm of water at 20.0°C. at the thermal equilibrium temperature 24.0°C. the specific heat of the material in KJ/KG°C is. A] 0.15 D] 1.6 B] E] C] 0.97 0.61 none
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