6. A mass of 0.20 kg of metal having a temperature of 100 deg. C is plunged into 0.04kg of water at 20 deg. C The temperature of the water and metal becomes 48 deg.C. The latent heat of ice at 0 eg. C is 335 kJ/kg-K and the specific heat capacity ofwater is 4.19 kJ/kg-K. Assuming no heat loss to the surroundings, determine thespecific heat capacity of the metal in kJ/kg-K

Use the concept of calorimetry which states that heat loss by metal is equal to heat gain by…

Answered: 6. A mass of 0.20 kg of metal having a…

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

A piston-cylinder contains nitrogen initially at 100 kPa, 20°C, and a volume of 0.283 m³ (State 1). The nitrogen undergoes two processes. First, the nitrogen is compressed to 7000 kPa (State 2) in an isothermal process. Finally, the nitrogen is expanded to 100 kPa (State 3) in a reversible adiabatic process. You may assume that nitrogen is an ideal gas with constant (average) specific heats: Cp = 1.039 kJ/kgK, c, = 0.742 kJ/kgK, and R= 0.297 kJ/kgK.
B2. The heat energy of 1605 kJ is supplied to saltwater in the steam generator to heat from 25°C to 104°C for the generation of water vapor, Take the density & specific heat of the solution as 1028 kg/m³ & 3 J/kg°K respectively. Determine the quantity of saltwater in the steam generator. I Solution: i) Change in Temperature (in K) ii) Mass of the saltwater (in kg) iii) Quantity (Volume) of salt water (in m³)
2) The energy consumed by a shower for 30 days is 22kwh. It is known that the resistance of the showerhead is 20 ohms and that its nominal current is 15A. So, what is the time in minutes that the shower was turned on during this period?
first one please
2. 10kg of H₂O in a 1.5m³ tank is initially at 200°C heat loss causes a decrease in temperature to 150°C. find: a. Phase 1 and 2 b. Internal Energy at 1 and 2 c. Heat loss if this system is stationary d. Heat loss if the body moving at velocity of 5m/s and assuming the mass of the empty tank negligible. Tonk A contains 2-kg steam a
i. Draw a P-V graph to represent the changes undergone by the air ii. Calculate the maximum volume of the air. iii. What is the maximum pressure of the air? iv. State how the net work done on the air for the whole process can bedetermined.
Gaseous is CO2 is contained in a vertical piston cylinder assembly by a piston with mass 50kg and having a face area of 0.01m2 The mass of the CO2 is 55 grams. The CO2 is initially occupies a volume of 0.005m3 kJ and has the change in internal energy of AU = 0.68 /kg: The atmosphere exerts a pressure of 94kPa on the top of the piston. Heat transfer occurs slowly from the CO2 to the surrounding, and the volume of the CO, decreases to 0.003m³. Friction between the piston and the cylinder wall can be neglected. The changing kinetic and potential energy of gas is negligible. The kinetics energy of piston can be ignored but the potential energy should be taken into consideration. The local acceleration of gravity is 9.75 m/s² Consider the piston and gas together as a system in the cylinder, calculate the following: A. What is the change in internal energy of CO2 gas in kJ? B. What is the change in internal energy of piston in kJ? C. What is the change in potential energy of piston in kJ? D.…
In the air conditioning process in the humidifier, air at a dry bulb temperature of 30 degrees C and RH of 10% increases its RH to 50%. Determine the amount of moisture added in the humidifier per kg of dry air: ....
1.0 A mass of ice at -7 °C is needed to cool 224 kg of vegetables (Cp = 3.35 KJ /kg.K )in a bunker for 24 hours . The initial temperature of the vegetables is assumed to be 29 °C . It is also assumed that the average temperature in the bunker is 7°C within the 24 - hour period . If the heat gained per hour in the bunker is 25% of the heat removed to the vegetables from 29 °C to 7°C, what would be the required mass of ice ?
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Oxygen is heated from 700 to 1000 R. Determine the enthalpy energy change Ah of oxygen, in Btu/lbm, using the cp value at the average temperature from the table. (You must provide an answer before moving on to the next part.) The enthalpy energy change of oxygen is 218 Btu/lbm.
IMPORTANT NOTE: THE VALUE OF K IS 865 (K=865). PLEASE ANSWER ASAP THANK YOU!!
Fill in the blanks: Magnolia Dairy product must cool 4000 gallons of fresh milk from the farm from an initial temperature of 80°F to a temperature of 38°F in 5 hours. If the density of the milk is 8.6 lb/gal, sg 1.03 and Cp = 0.935 BTU/lb-R, how much brine must be circulated in gpm, if the change in temperature of brine is 15F°, sg = 1.182 and Cp = 0.729 BTU/lb-R? %3D gpm

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS