A 1200-W electric resistance heating element whose diameter is 0.5 cm is immersed in 34 kg of water "cp=4.18 kJ/kg.K" initially at 20 C. Assuming the water container is well-insulated. How long it will take for this heater to raise the water temperature to 50 C "Seconds"?

Q: The inner and outer surfaces of a 25-cm-thick wall are at 27 oC and 45 oC, respectively. The outer…

A:

Q: It is a hot day in Atlanta and you and your friends bought an ice cream maker. The unit consists of…

A: To obtain the solution of the above question, we will apply the 1st law of thermodynamics and is…

Q: a) A gas is trapped in a piston-cylinder device. The initial pressure and temperature of the gas are…

A:

Q: You place a 1.5 kg block of aluminum that is 45°C in contact with a 2.1 kg block 18°C. Both blocks…

A: Given data as per question Mass of aluminium block, mal=1.5 kg Temperature of aluminium block,…

Q: This method of heat transfer doesn't require any media for heat to travel. Convection method…

A:

Q: Consider a heat transfer situation. Heat flows from the hot item or area to the cold item or area.…

A: Here situation is given of two objects hot object and cold object. The heat transfer between two…

Q: A composite plane wall consists of a 5-in.-thick layer of insulation (k, = 0.029 Btu/h ft R) and a…

A: It is given that:It is required to determine:(a) Temperature at the interface of the two layers.(b)…

Q: a) A basement refrigerator is used to store cool beverages during the long hot summer. The…

A: following is the answer to the above problem-

Q: effect and thus global climate change. On average, 0.59 kg of CO₂ is produced for each kWh of…

A:

Q: Thermodynamicclass  contains  32  undergrad  students.  The  plan  is  to   air-conditionthe…

A: Given data: Total number of students = 32 Cooling capacity of air-conditioning unit = 8 kW Heat…

Q: Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1624 kJ is…

A: Given: T1=24°CT2=101°CQ=1624 kJ/kgρ=1015 kg/m3c=4.6 J/kg°K

Q: Analyse an industrial thermodynamic system (refrigeration systems) in terms of work done, from first…

A: Analyzing an industrial thermodynamic system such as a refrigeration system in terms of work done…

Q: a) A gas is trapped in a piston-cylinder device. The initial pressure and temperature of the gas are…

A:

Q: The heat engine shown in the figure uses 2.0 mol of a monatomic gas as the working substance.…

A: Introduction In this problem, we will use the ideal gas equation for each state to compute the…

Q: (a.) What is the relationship between power, P (in watts) and work, W (in joules)? What is the…

A:

Q: A refrigerator has an ice tray compartment at -18.0°C and the room temperature is 29.3°C. The…

A: Given data The lower temperature is T1=-18°C The higher temperature is T2=29.3°C The mass of water…

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.