A 2 kW, 40 litres water heater is switched on for 20 minutes. The heat capacity c, for water is 4.2 kJ/kgK. Assuming all the electrical energy has gone into heating the water, What is the increase of the water tem

A 2 kW, 40 litres water heater is switched on for 20 minutes. The heat capacity c, for water is 4.2 kJ/kgK. Assuming all the electrical energy has gone into heating the water, What is the increase of the water tem

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

Related questions

Q: Temperature of cooling chamber of refrigerator is kept at T1 = 280 K. If the surrounding temperature…

A: Given: The temperature of the cooling chamber is T1=280 K. The formula for the coefficient of…

Q: SL-4 A reversible refrigerator is driven by a (non-reversible) heat engine with e-0.250. Both…

A: A reversible heat engine is a work producing device which is based on Carnot's cycle and its…

Q: Consider a residential heat pump use to maintain the inside air temperature of the house at 23C.…

Q: If the daily kw-hr energy by household using solar energy within 6 hrs peak sunlight in a day is 412…

A: Daily solar energy used by household, E = 412 kw hr No of hours, n = 6 hrs

Q: A room has to be maintained at 25 deg C at all times. Assuming the outside temperature of the room…

A: GivenT1=25oC=298KT2=-5oC=268KQ=42kW

Q: Two refrigerators A and B operate in series. Both refrigerators absorb energy at same rate of 1.5…

Q: Find the heat that must be removed to a ton of apples from 80 to 32 deg F. Neglect respiration load…

A: The initial temperature of the apple (Ti)=80oF The final temperature of the apple (Tf)=32oF The mass…

Q: differentiate between Open Feedwater Heaters and Closed Feedwater Heater with given 1 application on…

Q: 1. A Carnot engine requires 35kJ/kg from the hot source. The engine produces 15 kW of power and…

Q: A cycle HE does 60kJ of work per cycle. If the efficiency of the heat engine is 60%. The heat…

Q: téimperature čàn bê produčed din Mårch ate how many liters of hot water at 50 by a 4 m² solar…

A: Given details: Tow=50°c,Tiw=12°cA=4m2η=53%cpw=4.187j/kgk

Q: A heat engine with efficiency 60 %, driving both a heat pump and refrigerator at the same time, the…

Q: 1. Heat added to a 0.51m³ of air at constant pressure which results to a temperature increase of…

A: Note: kindly post different questions seperately, we experts can solve one question at a time,…

Q: In a heat engine as temperature of heat source increases, the Carnot efficiency will O a. Decrease O…

A: Let T1 =Heat source temperature T2 =Sink temperature As we know that efficiency of Carnot cycle is…

Q: A solar collector absorbed 40W/m2 heat from the atmosphere. This is equal to the convection brought…

A: Given data: Q=40 W/m2T1=40°CT2=80°C Need to determine the convective heat transfer coefficient.

Q: H.w: An eletric heater Consumes 1.8MJ when - Connected to a 25ov supply for 30minutes. Find the…

A: given data- energy consumed = 1.8 MJ potential difference = 250 V time =30 minutes to determine -…

Q: energy transffered by heat from an engine during one cycle is 500J. how much energy must be added to…

Q: A refrigerator working between 283 K to 310K and extracting 340 J of heat. How much work required to…

A: Given data: - The higher temperature is TL = 310 K. The lower temperature is TL = 283 K. The…

Q: The co-efficient of performance of a Carnot refrigerator, when it extracts 8350 kJ/min from a heat…

A: The COP of the Carnot refrigerator is, COP=QWW=83505=1670 kJ/min×0.0166667 kW1 kJ/min=27.83 kW

Q: For a power system operates with Wcycle = 810 BTU and Qout = 1769 BTU. What is the thermal…

A: Given data Work = 810 BTU Heat out = 1769 BTU Find the thermal efficiency of the system

Q: A 70 MW thermal power plant, which receives heat from a 350 °C deki thermal source, leaves 35 MW of…

A: Given: Power, P = 70 MW Heat rejected, Hr = 35 MW Heat source temperature, T1 = 350 °C Heat sink…

Q: 6.) Pineapple fruits with a mass of 500 kg are supplied to a cold storage at 20 C. The cold storage…

A: Given: m = 500 kg T1 = 20 C T2 = 5 C L = 105 kJ/kg Cp = 1.256 kJ/kgK

Q: O O O Question No. 15 A 1000 W heater is used for 1 hr every day for 30 days. Find the cost of…

Q: The motor of an electrical appliance consumes 18 000 J. during its operation, 9450 J dissipated in…

A: Given: Energy consumed by the motor is 18 000 J. Heat dissipation is 9450 J. Energy to produce light…

Q: A gas has an internal energy equal to 10000 J. After this process, we have 1000 J of heat absorbed…

A: Given, U1=10000 J Q=1000 J (Positive, because heat is transferred to the system) W=1500 J (Positive,…

Q: A heat pump with a motor of 2 kW is used to keep a chicken hatchery at 30°C. This latter loses…

A: Given: The power of motor, W = 2 kW The temperature at the chicken hatchery, T1 = 30oC The heat loss…

Q: The output power of a wind turbine is 500 kW. Its efficiency is 43 %. Take density of air as 1.12 3…

Q: 4-kW heat pump is operated by a peasant. It should keep a duck hatchery at 32 degrees celsius, where…

A: It is required to determine COP of heat pump

Q: 360 kJ of heat is transferred from a hot reservoir of 600 K to a cold reservoir of 250 K. If the…

Q: If heat rate is 12x10° kJ/kWh, then efficiency in percentage will be equal to

Q: A system is proposed to generate power from wastewater of 54C. If the ambient temperature is 23C,…

A: Highest thermal efficiency is given by ηmax = Work outputHeat input = Q1-Q2Q1 =…

Q: ternal energy increases

A: given:W=150kj∆U=95kj

Q: Q1/ A refrigeration system operates according to reversed Carnot cycle, low temperature is -20 °C,…

Q: -16 The store advertisement claims that a new light bulb type consumes only 9 W to generate the same…

A: For solution refer below images.

Q: A Carnot engine absorbs 1900 kJ of heat from a reservoir at 360 °C and exhausts heat to a reservoir…

Q: A system produces 10 BTU of work upon addition of 50 kj of heat. Find the heat rejected in ft-lbf.

Q: The heat loss from a chicken coop (chicken house) is K(Tnside - Toutside) during the winter, where K…

Q: 2) The energy consumed by a shower for 30 days is 22kwh. It is known that the resistance of the…

A: To find: The value of time in minute. Given: The value of energy consumed is, 22 KWh. The value of…

Q: Qu A heat engine operates between 1625 C and 27 C and receives 400 kJ of heat. The maximum…

Q: A storage battery is considered as the system. It has the terminal potential of 12 V and draws a…

A: Given that, V=12 V ; I=6 ampTime t=1.5 hr=1.5×3600=5400 sec△U=-750 kJ Decrease in stored energy

Q: A container maintains a constant pressure of 86300 Pa and volume of 116 liters while 49960 J of heat…

A: Given Constant pressure = 86300 Pa Constant volume = 116 liters Heat added = 49960 J To find Work…

Question

A 2 kW, 40 litres water heater is switched on for 20 minutes. The heat capacity c, for water is 4.2 kJ/kgK. Assuming all the electrical energy has gone into heating the water,

What is the increase of the water temperature in degree centigrade?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Hi I need help with a thermo review question- thank you! A refrigerator transfers 6 kW of heat from the cold space at 277 K and transfers 10kW of heat to the surroundings at 300 K. a) Determine the Rate of Work input required (kW). b) Determine the Refrigerator Coefficient of Performance c) Determine the Coefficient of Performance if it’s a Carnot Refrigerator
1.3 An arbitrary heat engine is operating with the average heat addition and heat rejection temperatures Tin, and Tout,1 of 600 and 360 K, respectively. The thermal efficiency of the cycle should be increased by 25% (i) by increasing the heat addition temperature or (ii) by decreasing the heat rejec-
I need answer within 20 minutes please please with my best wishes
A tank of water has a shaft rotating at 60 rpm with a torque of 40 N-m that is stirring the water. A heater is also present that operates at 120V and draws 4A of current. Heat is then removed from the water such the total energy content of the water is constant. How much heat is removed?
100kg of water at 75C and 1 bar is heated in a boiler to superheated steam at 5 bar and 350C. Calculate the change in internal energy a. 200,100 kJ/s b. 98,221 kJ/s c. 67,763 kJ/s CHIL d. 256,910 kJ/s
A 4-kW heat pump is operated by a peasant. It should keep a duck hatchery at 32 degrees celsius, where heat is removed at a rate of 10 kW to the cooler ambient Tambient. What is the minimum COP for the pump that will be acceptable?
I need the answer as soon as possible
I need the answer as soon as possible
It costs 10.2 per kwh to heat a home, the interior temperature of the home is 20°C, and the temperature. outside is 10°C. If a 2m² door is left open for an hour, what will be the heat loss to the outside? 20°C -10°C How much would it cast to return the home to it's original temperature once the door has been closed? Assume the furnace has an output of 29,3 kWh
None of the above Electric heater is used to heat 0.63 liters/minute of water (c. = 4.18 kJ/kg.K density =1000 kg/m ) from 13 °C to 85 C. What is the current (in Amperes) that must be supplied to this heater if the supplied voltage is 220 V? Select one: O a 10.37 Ob. 11.97 Oc. 7.98 Od.14.36 O e. None of he above