2.5 kW of solar energy comes on top of the solar panel placed on the roof of a house. 25% of this incoming energy is lost to the environment, and the remaining energy is used to increase the temperature of the water passing through the solar panel from 30 oC to 60 oC. Determine how many liters of water per hour should pass through the solar panel in order to achieve the desired increase in water temperature under continuous operating conditions. You can get the density of the water as 1000 kg / m3. Also, neglect the pressure loss, kinetic and potential energy changes of the water flowing through the solar panel.,

Q: Find the work done by the tension force of a simple pendulum, consisting of a mass m and a string of…

A: Given data → System - Simple Pendulum Mass = m Length = L Pendulum swings downward  At lowest…

Q: A car is accelerated from rest to 85 km/h in 10 s. Would the energy transferred to the car be…

A: The final velocity of the car is the same in both cases. From the work-energy theorem, Since the…

Q: Work of 1 Joules is done in stretching a spring from its natural length to 20 cm beyond its natural…

A: Given data: x=20 cmW=1 Joules Need to determine the force required to hold the spring at 20 cm.

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Q: Water is pumped from a 200-ft-deep well into a 100-ft-high storage tank. Determine the power, in kW,…

A: Given data: The rate of volume of the water pump from the deep well is V=200 gal/min The depth of…

Q: Determine the Kinetic energy in BTU of a 8 lbm block moving at a velocity of 85 ft/s.

A: Given data  mass of block (m)= 8 lbm velocity of block(v) = 85 ft/s

Q: Nitrogen with a mass of 2.23 kg expands at constant pressure. The initial pressure and temperature…

A:

Q: While the pressure remains constant at 689.2 kPa, the volume of a system of air changes from 0.567…

A: Given question belongs to the subject Engineering Thermodyanamics and can be solved using concepts…

Q: A mass of 200 kg of water at 20°C is stored in a tank. An engine coupled to a propeller inside the…

A:

Q: A force of 500 N is used to stretch a spring with a 0.5 kg to 350 mm. The estimated value of the…

A: Given, Force (Fs) = 500 N Mass (m) = 0.5 kg Displacement (x) = 350 mm

Q: Energy is added to 4.6 kg of air with a paddle wheel until ΔT = 102 °C. Find the paddle wheel work…

A:

Q: Nitrogen with a mass of 4.69 kg expands at constant pressure. The initial pressure and temperature…

A: Given data:- Mass = 4.69kg P1 =P2 = 170kpa T1= 22°C T2 = 207.8 °C

Q: Patm = 100 kPa A = 0.0078 m² mpiston = 10 kg mgas = 0.5 kg k = 9000 N/m Heat -X₂ = 0.06 m -x₁ = 0m

A:

Q: In a process, a closed system receives electric power of 25W, does work at the rate of 40W, receives…

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Q: specific internal energy of 10 kg of oxygen gas when the temperature changes from 38° C to 50°C. The…

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Q: Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

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Q: A student had a breakfast of 200 food calories. He thinks of burning this energy by drawing water…

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Q: Nitrogen with a mass of 4.68 kg expands at constant pressure. The initial pressure and temperature…

A: Given:- m=4.68kg, P1=P2=172Kpa, T1=21.4 deg.C, T2=205.7 deg.C Find:- W=? Kj

Q: 2.5 kW of solar energy comes upon renovation of a house. 25% of this incoming energy is lost to the…

A:

Q: In the factory where you work, there is a system like the one below, where you have two tanks at…

A: Given: To find: Volumetric flow rate

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A: Given variables are: Power (P) Density (ρ) Pressure (p) Energy (E) The units and the dimensional…

Q: A mass of 7 kg undergoes a process during which velocity decreases from 32 m/s to 19m/s, while the…

A: Givenm=7kgv1=32m/sv2=19m/su1=1.24kJ/kgu2=2.08kJ/kgQ1=2kJQ2=-0.8kJ

Q: A system with 100 kJ of internal energy is allowed to do work amounting 500 kJ. Find the value of…

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Q: Calculate the work done in a piston cylinder arrangement during the expansion process, where the…

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Q: An electric motor is used to drive the shaft of a small water pump. During a performance test, the…

A: Given data,  Torque T= 5.014 N.m  Power P= 638.52 W  Need to calculate N

Q: A gas undergoes a process during which volume and pressure are related by the equation PV =…

A: P1 = 200 kpa V1 = 20 L V2 = 54.36 L Find the work done Answer is a) 3.99 KJ

Q: Determine the Kinetic energy in BTU of a 7 lbm block moving at a velocity of 85 ft/s

A: given  weight = 7 lb  and velocity ,v=85ft/s

Q: A cylinder is heated to cause a piston to move upwards using the expansion of gas inside it. If…

A: PV = nRT P is constant. V1/T1 = V2/T2  V1/V2 = T1/T2 V1 = 1ft^3 T1 = 500 R T2 = 700 R A = 60 in^2 l…

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A: Given data: Power consumed by compressor = 5 hp = 3.73 KW                     Discharge rate = 30…

Q: A ball is moving with a velocity of 5 m/s. Its velocity is decreasing at the rate of 1.08 m/s². What…

A: Ans:initial velocity of ball u=5m/sacceleration a=-1.08 m/s2final veloctiy of ball after t=9 sec…

Q: A 100-hp (1 hp = 746 W) car engine has a drive shaft rotating at 2000 RPM. How much torque is on the…

A: Given Data  1hp=746 W N=2000 rpm Power of the engine, P=100 hp Power=746(100)=74600 watt…

Q: A 20lbm object is located 300 ft above the ground. What is the potential energy of the object in…

A:

Q: ms is suspended from a spring, and the spring stretches 12.1 centimeters. The mass is then removed,…

A: Given data as per question m=0.43 kg x=12.1 cm=0.121 m Work done =0.380 J

Q: A gas of mass 1.5 kg undergoes an expansion process which follows a relationship p= a +bv, where a…

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Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.