Assume that the kinetic energy of a 1350 kg car moving at 125 km/h could be converted entirely into heat. What amount of water could be heated from 18 ∘C to 52 ∘C by the car's energy? Recall that 4.184 J are required to heat 1 g of water by 1∘C. Express in two significant

Q: Air at 22°C is blown over a hot pipe with a surface area of 3.19 m2 to dissipate 927 W of heat…

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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: An eccentric chemistry professor (not mentioninn any names) stops in every day and orders 250 mL of…

A: Given, T1=950CT2=100CT=900Cmc=250mL

Q: if your water heat has an efficiency of 95%, how much energy would it take to heat 45 kg of water…

A: The heat energy required to raise the temperature of the water is given by, Q=mcTf-Ti Here, m is the…

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: How many joules are needed to change 50g50g of ice at 0∘C0∘C to steam at 120∘C120∘C?The latent heat…

A: Mass of ice (m) = 50 g Initial temperature of ice = 0o C

Q: If 20 grams of hot water at 80⁰C is poured into a cavity in a very large block of ice at 0⁰C, what…

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Q: When 1 kg of water freezes at 0 ْC, then 333.7 kJ heat is released. Determine the heat released…

A: Weight of water at 0°C=1kg Initially, water was at=0°C Heat released at 0°C=333.7kJ Weight of water…

Q: Washington Bridge is about 1.6 km at -26.0"C. How long erature is 40.6 C (asteel = 12 x10 C)?

A: Length in winter, L = 1.6×103 mTemperature in winter, T1 = -26°CTemperature in summer, T2 = 40.6°C∆T…

Q: 896 Joules of heat are added to 35.3 grams of water, initially at 20∘C20∘C. What is the final…

A: Given  heat added to water (Q)=1896 J mass of water (m)=35.3 gm initial temperature of water…

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: If the specific heat of a 1kg object is 18J/kg⁰C, how much energy would be needed to heat the object…

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Q: Calculate the amount of heat required for the melting of 10.0 kg at −10∘⁢C. Given that latent heat…

A: Mass of ice is m = 10 kg Initial temperature T1 = -10 C Latent heat of fusion is L = 3.3×1⁢05⁢J/k⁢g…

Q: ir at 23°C is blown over a hot pipe with a surface area of 3.88 m2 to dissipate 925 W of heat…

A: Temperature of air = 23oC Surface area (A) = 3.88 m2Power dissipated (P) = 925 W Temperature of…

Q: An iron bar is heated. Its length, L, in mm can be modelled by a linear function, L=mT+c where T is…

A: Length of the iron bar can be modelled by a linear function which is given below,…

Q: Estimate the amount of heat (in J) required to raise 2kg of graphite from room temperature (25∘C) to…

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Q: An insulating cup contains 150 grams of water. 25 grams ice cubes at 0 C is placed in the water. The…

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Q: On a trip, you notice that a 3-kg bag of ice lasts an average of one day in your cooler. What is the…

A: Given,  mass of ice, m= 3 kg              time taken by ice to melt t = 1 day =24 x 60 x 60  s…

Q: A heat transfer of 9.5×105 J  is required to convert a block of ice at -10 ∘C  to water at 14 ∘C.…

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Q: Suppose 160 W of heat flows by conduction from blood vessels under the skin to the body's surface…

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Q: Air at 24°C is blown over a hot pipe with a surface area of 3.85 m2 to dissipate 926 W of heat…

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Q: a rectangular pane of glass 24.5 cm by 13.6 cm is 7.67 mm thick. if it's 55 c on one side of the…

A: Recall Q/t=KA(T1-T2)/L

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: solid block of iron at 220 C is set on the floor of a foundry at 35 C. What will the block's…

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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: Suppose we have 48.76g of water into which heat is transferred.  If the initial temperature was 5.4…

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Q: Suppose we have 41.63g of water into which heat is transferred.  If the initial temperature was 4.87…

A: Mass of water, m=41.63 g Initial temperature, T1=4.87 ⁰c Final temperature, T2= 63.71 ⁰c Specific…

Q: An employee puts m= 1.95 kg of melted ice cream at T0= 3.5ﾟC into the freezer. Assuming that ice…

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Q: a) How much heat (in joules) is required to raise the temperature of 26.3 kg of water from 18 ∘C to…

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Q: To what temperature will 7900 J of heat raise 2.5 kg of water that is initially at 16.0 ∘C? The…

A: Given:Heat transferred, Q = 7900 JSpecific heat of water, SW = 4186 J/kg °Cmass, m = 2.5…

Q: Air at 21°C  is blown over a hot pipe with a surface area of 3.61 m2 to dissipate 922 W of heat…

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Q: Calculate the quantity of heat absorbed by 70 g of water that warms from 30∘C to 90∘C. Express your…

A: Calculate the quantity of heat absorbed by 70 g of water that warms from 30∘C to 90∘C.Express your…