Suppose 1.00 kg of water at 38.5° C is placed in contact with 1.00 kg of water at 21° C. What is the change in energy (in joules) of the hot water due to the heat transfer when it is placed in contact with the cold water and |allowed to reach equilibrium? On

Q: A hot copper rod is immersed in 500 kg of water for which the temperature increased  to 180F from…

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Q: What is the magnitude of energy (in MJ) that must be removed to freeze 344 L of water with a density…

A: Given  Volume of water V= 344L V=0.334m3 ρ=999.8kg/m3 Mass m=343.931 kg Latent heat of freezing Lf =…

Q: The human body, while at rest, produces heat energy at a rate of about 117 W. How much sweat (in g)…

A: The heat energy evaporated  per minute is,   Q=Qt˙=117 W1 minute60 s1 minute=7020 J

Q: A baking dish is removed from a hot oven and placed on a cooling rack. As the dish cools down to 35…

A: Given:-  The Initial temperature  Ti = 175oC = 175+273.15 = 448.15 K  The final temparture Tf = 35oC…

Q: Heat of combustion of gasoline is 50 MJ/kg. What mass of the gasoline is needed to release 10 MJ of…

A: Given information: Here, C is the combustion of the gasoline (i.e., the heat released per kg of…

Q: Ex. 124 A body cools from 75° to 55°C in 10 minutes in a surrounding of 31°C. At what temperature…

A: To find-Temperature of body (θ)=?Given-θ1=750 Cθ2=550 Ct1=10 minθ0=310 C

Q: 5 kg person cann- he rides a bike a duces energy at a verted to heat. TR

A: Energy produced by his body(w)=450WSo in 1hour the produced energy will be(E)=450×3600=1620000JThe…

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

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Q: The motor that drives a refrigerator produces 174 W of useful power. The hot and cold temperatures…

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Q: A metal calorimeter has mass m, = 0.25 kg and contains m, = 5 kg of watcr, and the whole system is…

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Q: How much energy is required to raise the temperature of 200.0 mL of water by 10.00 ∘C?

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Q: What is the magnitude of energy (in MJ) that must be removed to freeze 366 L of water with a density…

A: Given:- The volume of the water V = 366 L  The water with a density = 999.8 Kg/m3  that is already…

Q: Given the heat capacity of copper (0.385 J/goC) and of water, if you place a 100oC copper block into…

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Q: A 100-g copper calorimeter can contains 250g of oil at 40o C. To the oil is added 150 g of aluminum…

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Q: The temperature of a material is a measure of the O the average kinetic energy per particle. O the…

A: Introduction: The temperature of the body is the degree of hotness and coldness, the temperature is…

Q: 200 kg of water at 0o C is in an insulated container. A .500 kg sample of iron (448 J/kg-C) at 100oC…

A: It is given that,

Q: How much energy is transferred thermally to change 0.2 L of ice at -20◦C into steam?   (density of…

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Q: In exercising, a weight lifter loses 0.177 kg of water through evaporation, the heat required to…

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Q: The human body, while at rest, produces heat energy at a rate of about 116 W. How much sweat (in g)…

A: Given data The heat energy is given as Q˙=116 W. The latent heat of vaporisation is given as Lv =…

Q: 50.0 g of warm water is added to 50.0 g of cold water in a Styrofoam calorimeter. The initial…

A: The gain or loss in heat of a substance can be calculated by the following formula, Here m is the…

Q: What is the magnitude of energy (in MJ) that must be removed to freeze 439 L of water with a density…

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Q: What is the magnitude of energy (in MJ) that must be removed to freeze 466 L of water with a density…

A: We have to first calculate mass of the water from given volume. In order to freeze the water, we…

Q: How much energy must be removed from a 100 gg block of ice to cool it from 0∘C∘C to -30 ∘C∘C? The…

A: The expression for the energy is,

Q: Ice at 00C  is placed in a Styrofoam cup containing 0.32 kg of lemonade at 270C . The specific heat…

A: Ice at 00C  is placed in a Styrofoam cup containing 0.32 kg of lemonade at 270C . The specific heat…

Q: In a game of football outdoors on a cold day, a player will begin to feel exhausted after using…

A: Given : ∆U = -8 × 105 J (negative because internal energy is lost before being exhausted) In part…

Q: [b] About how many joules of heat energy does it take to cook a pound of pasta? Use reasonable…

A: Mass=0.45kg

Q: A block of ice, 150.6g is initially at 0°C. The ice is heated until it has turned to water at a…

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Q: The human body, while at rest, produces heat energy at a rate of about 100 W. How much sweat (in g)…

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Q: In the laboratory, calorimetry can be used to determine the latent heat of fusion of water, LfLf. If…

A: Given Mass of ice mi=30 gm mi=0.03 kg Mass of calorimeter cup mc= 60gm=0.06kg Mass of water mw=170…

Q: A 10KW immersion heater is placed in a pot containing two liter of water at 23°C. How long will it…

A: Given that:- Power of heater, P = 10 kW = 10 × 103 W Volume, V = 2 L = 2 × 10-3 m3 Temperature, T1 =…

Q: You wish to warm 150 kg of water by 20∘C for your bath.   Determine the amount of heat needed in…

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Q: A bricklayer drops lump of mortar from a point 30 meters up the side of a brick building he is…

A: Given h=30 m (The height from which the lump of mortar falls) g=9.8 m/s2 (acceleration due to…

Q: (a) A typical student listeningattentively to a physics lecture has a heat output of 100 W. Howmuch…

A: Given: Heat output is 100W. Specific heat of air is cair=1020Jkg K. Density of air is ρ=1.20kg m3.