A solar panel receives energy from the Sun at a rate of 5.0 kW. Thermal energy is transferred from the solar panel to water with an efficiency of 20%. Coldwater of mass 15 kg enters the solar panel every hour. The specific heat capacity of water is 4200 J/(kg °C). Calculate the temperature increase of the wate

Q: An aluminum washer has an outer radius ro=1.3cm and an inner radius of ri=0.43cm. The temperature of…

A: Given ,         initial temperature Ti=282k         Final temperature Tf=630k        mass of…

Q: 2) A hot bar of lead with Ti Pb, Mpb = .6 kg, is dropped into an iron pot (mFe = .3 kg) that has…

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Q: A 20.0 g ice cube is dropped into 200 g of water in a thermally insulated container. If the water is…

A: Given, Mass of ice, mice=20 g Mass of water, mw=200 g Latent heat of ice, Lf=79.5 cal/g Initial…

Q: A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200…

A: Here, the thickness of the pipe is, 1.50 cm.  The thermal conductivity is 0.200 cal/cm ·°C. Since, 1…

Q: 1. 500J of work are done on a system in a process that decreases the system’s thermal energy by…

A: According to the first law of thermodynamics, ∆U=Q+WQ=∆U-W Here, ∆U is the change in the internal…

Q: On a hot day, the temperature of a 76,000 L swimming pool increases by 1.10°C. What is the net heat…

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Q: A camper is about to drink her morning coffee. She pours 570 g of coffee, initially at 87.5 °C, into…

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Q: An immersion heater of power J= 500 W is used to heat water in a bowl. After 2 minutes, the…

A: According to thermodynamics -  In first 2 minutes, heater gives heat to the water -  Q1=Jt1 Where  Q…

Q: The equation of an ideal gas is given by, T = T,e" , where v is the volume of the gas and a is…

A: First law of thermodynamics states that the energy can neither be created nor destroyed but can be…

Q: An unknown substance has a mass of 0.125 kg and an initial temperature of 95.5°C. The substance is…

A: The amount of heat is required to raise the temperature is Q=mcΔT

Q: A 10 kg of ice at 0 °C is mixed with 4 kg of steam at 100 °C in a thermally isolated container and…

A: Given data:  Mass of ice (m) = 10 kg at 0°C Latent heat of fusion (Lf) = 334000 J/kg Required: The…

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Q: A child running a temperature of 101°F is given an antipyrin (i.e. medicine that lowers fever) which…

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Q: A 0.230 kg aluminum bowl holding 0.820 kg of soup at 25.0°C is placed in a freezer. What is the…

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Q: In a calorimetry experiment, two liquid substances X and Y with the same mass are placed in separat…

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Q: A rubber ball of radius 1.72 m and emissivity 0.940 is heated to 128°C. HINT (a) Convert the given…

A: Given values -  Radius =r =1.72 mEmissivity=e=0.940Temperature=T1=128oC

Q: What is the change in the internal energy of a system when a total of 150.00 J is transferred by…

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Q: When of milk at 5°c added to of tea mass was 110g at 95°C , the milk and water the tea has final…

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Q: On a hot day, the temperature of a 28,000 L swimming pool increases by 1.10°C. What is the net heat…

A: Given : Volume (V) = 28,000 L = 28 m3 Increase in temperature (∆T) = 1.10°C

Q: An electronics device generates 30.5 W of heat energy during normal operation. The heat is…

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Q: During a bout with the flu an 80 kg man ran a fever of 39 degreees Celsius instead of normal body…

A: Mass of man,(m)=80 kg -----(1) [Given] Specific heat of the water,(c)=4190 J/kg-oC -----(2)…

Q: During a brisk run, an adult human generates heat at a rate of about 1350 W. To remove this heat by…

A: The amount of heat is Dividing equation (I) by time gives

Q: burner transfers 9.20 ✕ 105 J into a block of ice with a mass of 2.07 kg and an initial temperature…

A: Given Mass = 2.07 kg  Energy given = 9.2 × 105 J

Q: 25) In a flask, 114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long…

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Q: A system gains 3310 J of heat at a constant pressure of 1.38 × 105 Pa, and its internal energy…

A: Write the given values with suitable variables.

Q: A hermetically sealed room 4 m x 4 m x 4 m has an internal sensible heat gain of 3 kW. The overall…

A: The  heat loss can be determined by, Q=h×A×T0-Ts

Q: The temperature of a 0.739 kg cube of ice is decreased to -148°C. Then energy is gradually…

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Q: An electric heater transfers 8.90 ✕ 105 J into a block of ice with a mass of 2.16 kg and an initial…

A: Let the mass of the ice be m, the heat supplied by the electric heater be Q, and the latent heat of…

Q: On a winter day, when the temp. outside is 17°C the temp. inside a room is maintained at 27°C by…

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Q: A 2.7 kg lump of aluminum is heated to 92°C and then dropped into 12.0 kg of water at 5.2°C.…

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Q: A thermodynamical system performs work and at the time exchanges energy to the outside environment…

A: First law of thermodynamics: The way of expressing the first law of thermodynamics is that any…

Q: A freezer is to convert 1.76 kg of water at 29.6°C to 1.76 kg of ice at -4.27°C. If the coefficient…

A: Given m=1.76 kg Cwater=4190 j/(kg. K) Cice=2100 j/(kg k) L=3.34 x 105j /kg

Q: What is the final temperature of a system? Given: The mass of the water is 80 g. The initial…

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Q: You take an aluminum cylinder with a mass m = (315± 2) g out of a furnace at temperature T = (250 ±…

A: Given that:  Mass of aluminum cylinder, m = (315± 2) g Initial temperature T = (250 ± 5)° C Final…

Q: At higher temperatures of 500k The specific heat capacity of copper with the following formula…

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Q: A well-insulated electric oven is being heated through its heating element. If the entire oven,…

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Q: A total of 105 J of work is done on a gaseous refrigerant as it undergoes expansion. If the internal…

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Q: Emission of heat by radiation is directly proportional to the temperature of the source. O a. True O…

A: True, Heat emission through radiation mode is dependent on source temperature.

Q: Heat Q, which has the SI unit of joule (J), is the quantity in mechanical engineering that describes…

A: The heat Q, flown during the time interval (∆t) through an insulated wall can be given as, Q =…

Q: Question t of 4 Question 1 A 101 cm long aluminum rod (thermal conductivity = 205 W/m-K) has a…

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Q: Cold water (cp = 4180 J/kg·K) leading to a shower enters a thin-walled double-pipe counter-flow heat…

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Q: Problem 2: 0.4 kg of ice at – 10°C are mixed with 0.2 kg of water at 50°C. The water and ice are…

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Q: Which of the following equations can be used for calculating the amount of heat required to change…

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Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.