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
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.22P: 1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas...
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffe6b38d5-9c11-4f69-9a40-925562e7a60b%2F007a11a5-d28a-4edb-8be6-f5d98c80acc5%2Fvfchjig_processed.png&w=3840&q=75)
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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