Q.7 10 kg of ice at –13 °C is exposed to the atmosphere which is at 23 °C. The ice melts and comes into thermal equilibrium. Total entropy change of ice as it comes to thermal equilibrium with the environment is kJ. Cp of ice = 2.093 kJ/kg°C, Latent heat of fusion of ice = 333.33 kJ/kg. A 14.49 В 16.61 C 17.63 D 22.36

Q.7 10 kg of ice at –13 °C is exposed to the atmosphere which is at 23 °C. The ice melts and comes into thermal equilibrium. Total entropy change of ice as it comes to thermal equilibrium with the environment is kJ. Cp of ice = 2.093 kJ/kg°C, Latent heat of fusion of ice = 333.33 kJ/kg. A 14.49 В 16.61 C 17.63 D 22.36

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

See similar textbooks

Similar questions

How much ice (by mass) at a temperature of -19.9 degrees Celsius must be added to 325g of liquid water at a temperature of 60.1 degrees Celsius in order for the final temperature of both to reach 21 degrees Celsius. c of ice=2100 J/kg/C c of water=4190 J/kg/C Latent heat of fusion of water=3.34E5 J/kg/C a. .115kg b. 12kg c. 5 lbs d. .191kg
A food product with 85% moisture content is being frozen. Estimate the specific heat of the product at -10°C when 80% of the water is in a frozen state. The specific heat of dry product solid is 2 kJ/(kg °C). Assume specific heat of water at -10°C is similar to specific heat of water at 0°C. And the heat of the types of ice follow the function of Cp ice = 0.0062 Tfrozen + 2.0649. Cp frozen product = ... kJ/kg °C.
Q2: The temperature of a gas steam is to be measured by a thermocouple. Determine the time it take: p =8500 kg/m _and C-320 J/kg to register 99% of the initial AT . For junction k=35 W/m.°C Ans : 38.5 sec Gas Junction D. h. T. 11111
A shock absorber with mass 0.2kg and heat capacity 500J/kg.K contracts by 0.19 meters due to an impact of a load inducing a constant force of 22.45kNt. After the impact the absorber becomes 18K hotter, how much heat did the absorber expelled in the environment? Present your answer in kilo-Joules (kJ).
Can you show the solutions for this review problem in Thermodynamics 2 8. Water at 2.5 MPa and 200°C is heated at constant temperature up to a quality of 80%. Find (a) the quantity of heat received by the water, (b) the change in internal energy, and (c) the work of a nonflow process. Ans. (a) 2025.7 kJ/kg; (b) 1396.5 kJ/kg; (c) 629.17 kJ/kg
Hot Reservoir HE 1 HE 2 Он QL Cold Reservoir W net,out, 1 net,out, 2 W Let's calculate for the combined HE Given, if nth,HE1 = 21th,HE2 1. Find Q, in terms of Q and QH- 2. What is overall thermal of the whole system?
0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.384 kJ/kg-K and Cp = 0.52 kJ/kg-K, calculate: (ANSWER MUST BE EXACT TO CHOICES ONLY) a) the final temperature in deg. C CHOICE -171 102 171 b) the final pressure in kPa CHOICES 68.94 73.84 63.84 c) the change in enthalpy in kJ CHOICES -25 -23 23 d) the work nonflow in kJ CHOCIES 13.87 18.97 16.97
Air (its gas constant is 287 J/kg.k) escapes from a tank at a temperature of 55 C and specific internal energy of u= 7508 J/kg, what will be its enthalpy (J/kg)? Select one: a. 101644.00 b. 21644.00 c. 61644.00 d. 41644.00 e. 81644.00
21. Determine the change in internal energy if there are 2kg of gas inside a rigid container, for which R=240J/kg-K (k=1.50), initial pressure Pi= 500.16kPa and temperature and T1= 70 C, then pressure increase to 1675kPa. a. 806.0348kJ b. 575.7391kJ c. 773.7934kJ d. 559.7464kJ
Mollier diagram determines the .1 - relationships between -- none of these answers. O different refrigerant types. pressure and enthalpy. O temperature, moisture, energy efficiency, air density, volume and heat content. thermal quantities. O
A sample of water that is initially at 84.00C absorbs 500 kcal of heat. As a result, the liquid water becomes water vapor at 1150C. What is the mass of the water? (Some useful information: cwater = 1 cal/g0C, Lv,water = 540 cal/g, and csteam = 0.480 cal/g0 C. a. 488 g b. 788 g c. 588 g d. 888 g e. 688 g
A certain ideal gas (unknown) inside a close piston-cylinder assembly undergoes a set of processes that composed of Isothermal expansion from State point 1 to state point 2, Isometric heat rejection from state point 2 to state point 3, and Isentropic compression from state point 3 back to the initial condition. If the maximum pressure is 3000kPa and maximum and minimum volume is 200cm³ and 50cm?, analyze the problem and perform the following: a. Draw and label the graph of this set of processes in the P-V and T-S diagram showing the state point numbers and energy directions. b. From the known ideal gases as shown in Table 1.0, select the best suited ideal gas to attain the processes stated if the lowest pressure is limited to 629.8kPa. Assume a constant specific heat. c. For the selected ideal gas from b, compute the work of compression (kJ/kg), work of expansion (kJ/kg), and heat rejected (kJ/kg) Table 1.0: Ideal gas specific heats of various common gases Gas constant, R kJ/kg-K Kikg.…