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

Q: Lake Erie contains roughly 4.50E+11 m3 of water. How much heat is required to raise the temperature…

A: Given(s): The mass of water: m=4.5×1011 m3 The initial temperature of the water, 11.5 oC The final…

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: 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 37 g sample of copper is at 22°C. If 821 J of energy are added to the copper, what is its final…

A: Given The mass of the copper is m = 37 g = 37 x 10-3 kg. The initial temperature is Ti = 22°C.  The…

Q: Two 50g ice cubes are dropped into 200g of water in a thermally insulated container. The water is…

A: total mass of ice = 50g + 50 g = 100 g mass of water = 200 g initial temperature of water = 25oC…

Q: The specific heat of water is 4186 J/kg c°. How much does the internal energy of 200 g of water…

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Q: How much mass (in grams) of aluminum initially at 150 °C must be added to 300 g of water initially…

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Q: 9.3°C . At what rate in watts must the person transfer thermal energy to reduce the the body…

A: Given Mass of person m =60 kg Body initial temperature = 39.3 0 C FFinal temperature = 370 C TTime…

Q: . Copper pennies, each of mass 2.5 grams, are heated to a temperature of 250.00 °C and then dropped…

A:

Q: What mass of steam at 100°C must be mixed with 300 g of ice at its melting point, in a thermally…

A: Given Information: Mass of ice, mi = 300 grams = 0.3 kg  Latent heat of fusion , Lf = 333 KJ /kg…

Q: . how much heat is released from the air in the process? = ....... (kj / kg)

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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: What mass of steam at 100°C must be mixed with 199 g of ice at its melting point, in a thermally…

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Q: 31.0 m of water is converted into 1671 m³ of steam at atmospheric pressure and 100°C temperature.…

A: Using first law of thermodynamics, ∆U=∆Q-W

Q: A freezer is to convert 1.5 kg of water at 27.9°C to 1.5 kg of ice at -4.42°C. If the coefficient of…

A:

Q: A 2.9 kg lump of aluminum is heated to 93°C and then dropped into 8.0 kg of water at 5.0°C. Assuming…

A: Given Mass of the aluminum lump is ma=2.9 kg Mass of water is mw=8.0 kg Temperature of the aluminum…

Q: The deep body temperature of a healthy person is 37 °C. What is it in Kelvin? Express this…

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Q: 1.  How long (in seconds) will it take to heat 40 kg of water from 40°C to 80°C with a 20-kW…

A: Since there are multiple questions posted, we will answer the first question. The heat energy needed…

Q: At a crime scene, the forensic investigator notes that the 6.2-gg lead bullet that was stopped in a…

A: Given: The mass of the lead bullet : m = 6.2 g (6.2 x 10-3 kg). The specific heat of lead: c = 130…

Q: A freezer is to convert 1.73 kg of water at 28.7°C to 1.73 kg of ice at -4.43°C. If the coefficient…

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Q: How much heat (in kJ) is needed to convert 566 g of ice at -10°C to steam at 126°C? (The specific…

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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: A copper block is removed from 330°C oven and immediately dropped into 2.25 L of water at 21°C.in an…

A: Given, Initial temperature of Copper block = 330o C Amount of Water = 2.25 L =2.25 kg Specific Heat…

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: How much mass (in grams) of aluminum initially at 150 °C must be added to 30og of water initially at…

A: Given The initial temperature of the aluminum is Ti(Al)=150°C. The mass of water is m=300 g. The…

Q: Following vigorous exercise, the body temperature of a 75.0 kg person is 38.7°C. At what rate in…

A: Write the formula for the specific heat in terms of the energy transferred out. Write the formula…

Q: What mass of steam at 100°C must be mixed with 250 g of ice at its melting point, in a thermally…

A: Formula required:

Q: Water at 20.0 °C is sprayed onto 0.194 kg of molten gold at 1063 °C (its melting point). The water…

A:

Q: Lead pellets, each of mass 1.40 g, are heated to 200°C. How many pellets must be added to 546 g of…

A: When two objects or bodies with different temperatures come into contact, the heat transfers from…

Q: 5.3 kilograms of water at 100°C is converted to steam at 1 atm. Find the change in internal energy…

A: Given data: - The mass of water is m = 5.3 kg. The latent heat of vaporization is L = 2.26 x 106…

Q: How much mass (in grams) of aluminum initially at 150 °C must be added to 400 g of water initially…

A: The mass of the water,

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: How many kilojoules of energy does it take to completely vaporize 130 g of water into steam at 100…

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Q: A 8.2 kg block of copper is dropped at 80 ° C into a container with 0.62 L of water at 10 ° C. How…

A: Given information: The mass of the copper block, mc=8.2 kg The temperature of the copper, tc=80 °C…

Q: What mass of steam at 100∘C∘ must be added to 1.30 kgkg of ice at 0∘C∘ to yield liquid water at 18…

A: Given Mass of ice is m=1.30 kg Heat of fusion for water is Lf= 333 kJ/kg Heat of vaporization is…

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: 4x105 J of energy is supplied to a bottle of oxygen at -182.97 ◦C, how much oxygen will evaporate?

A: 4x105 J of energy is supplied to a bottle of oxygen at -182.97 ◦C, how much oxygen will evaporate?

Q: What is the value of the heat absorbed or emitted by liquid water of mass m = 410 g at 12° C to take…

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Q: How much energy must be removed from a 500g block of ice to cool it from 0C to -40C? The specific…

A: Given:Mass of the block, m = 500 gSpecific heat, c = 2090 J.kg.KChange in temperature, ∆t  = -40 –…

Q: A thermally insulated sample of copper with mass equal to 100.0 g is at 30.0◦C. If 2500 J of energy…

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Q: What is the minimum velocity of a lead bullet if it completely melts when it strikes a wall? The…

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Q: A 2.0-kg aluminum block is originally at 10 degrees celcius. If 36 kj of energy are added to the…

A: Write the known values with the suitable variables. m=2 kgT1=10 °C=283 KQ=36 kJ=36×103 JC=900 J/kg K…

Q: What mass of steam initially at 130°C is needed to warm 200 g of water in a 100-g glass container…

A: The given values are, Ti,s=130° Cmw=200 g=0.200 kgmg=100 g=0.100 kgTi,g=20.0° CTf,g=50.0° C

Q: What mass of steam at 100°C must be mixed with 112 g of ice at its melting point, in a thermally…

A: Given that, mi=12 g=0.112 kgcw=4186 J/0CLf=333 kJ/kg=333×103 J/kgLv=2256 kJ/kg=2256×103J/kgTf=230C…

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

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