The number of kilocalories in food is determined by calorimetry techniques in which the food is burned, and the amount of heat transfer is measured. How many kilocalories per gram are there in a 6.00-g peanut if the energy from burning it is transferred to 0.600 kg of water held in a 0.200-kg aluminum cup, causing a 55.7oC temperature increase?

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 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: A 7.30-kg steel ball at 15.2°C is dropped from a height of 10.0 m into an insulated container with…

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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 2-m * 1.5-m section of wall of an industrial furnaceburning natural gas is not insulated, and the…

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Q: How much heat transfer (in kilocalories) is required to thaw a 0.433 kg package of frozen vegetables…

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Q: While painting the top of an antenna 225 m in height, a worker accidentally lets a 1.00 L water…

A: Given:-              While painting the top of an antenna 225 m in height, a worker accidentally…

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

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Q: Following vigorous exercise, the body temperature of an 80.0 kg person is 40.0 °C . At what rate in…

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Q: Following vigorous exercise, the body temperature of a 60.0 kg person is 39.1°C. At what rate in…

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Q: The maximum amount of water an adult in temperate climates can perspire in one hour is typically 1.8…

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Q: A thermopane window consists of 2 glass panes,each 0.5cm thick,with 1cm thick sealed layer of air in…

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Q: A 1.00-kg block of aluminum is warmed at atmospheric pressure so that its temperature increases from…

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Q: When air is inhaled, it quickly becomes saturated with water vapor as it passes through the moist…

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Q: TH Ta 4.00cm 3.00cm 2.20m A rectangular bar of gold has the dimensions as shown. (This is a very…

A: length of gold bar, l= 2.2 m cross-section area , A= (3 cm)x(4 cm)=12 cm2 = 12 x(10-2 m )2 = 12 x…

Q: A 0.500 kg aluminum pan on a stove is used to heat 0.250 liters of water from 20.0ºC to 80.0ºC . (a)…

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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: How much heat per second (H = Q/ΔT) is lost from the house due to heat conduction?   The answer in…

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Q: To illustrate the effect of ice on the aluminum cooling plate, consider the drawing shown here and…

A: Given information: Here, Ti and Ta are the temperatures of the ice and the aluminium plates…

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: What are the gallons consumed in units of gallons per winter?

A: The rate of energy loss due to conduction is,

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: A 0.500 kg aluminum pan on a stove is used to heat 0.250 liters of water from 20.0oC to 80.0oC. (a)…

A: (a) The heat transferred to the water is given as, Here, mw , cw and ΔT represent the mass of the…

Q: After watching a food hack video on Facebook, you decide to make some ‘coffee ice cubes’ by freezing…

A: Given information:

Q: One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a…

A: The rate if heat transfer is Qt=kAΔTd

Q: A 32 cm x 20 cm stained glass window is 16.0 mm thick and made of a glass with thermal conductivity…

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Q: A 76.0-kg person suffering from hypothermia comes indoors and shivers vigorously. How long does it…

A: The shivering creates the energy of 425 W.  Therefore, from the expression of the heat transfer and…

Q: A 50.0g thermometer is used to measure the temperature of 100 mL of water. The specific heat of the…

A: Given, Mass of thermometer mt = 50 g Mass of water mw = 100 ml = 0.4 Kg Specific heat ct = 750 J/kg…

Q: nes 15. Evaluate the following statement and choose the one that Best de O If an object has a high…

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Q: Suppose you stand with one foot on ceramic (k=28 W/mK) flooring and one foot on a wool carpet (k…

A: Thermal conductivity of ceramic is kc = 28 W/mK Thermal conductivity of wool is kw = 0.036 W/mK…

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

A: Given, Heat energy, Q=36  kJ=36000 J Initial temperature, Ti=10°C=283.15 K  Specific heat capacity,…

Q: An ice cube of mass 500 g and at 0 degrees * C is dropped into a cup containing 1kg of water at 70…

A: Let's define few things first: Latent heat of fusion is the amount of energy that must be supplied…

Q: Consider a surface at -5ºC in an environment at 25ºC. The maximum rate of heat that can be emitted…

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Q: A 50.0 g thermometer is used to measure the temperature of 120 mL of water. The specific heat of the…

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Q: A 100-WW lightbulb generates 95 WW of heat, which is dissipated through a glass bulb that has a…

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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: The heat energy used to raise the temperature of aluminum is calculated by using the formula…

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: At what net rate (in kW) does heat radiate from a 250 m black roof on a night when the roof's…

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Q: On a hot dry day, evaporation from a lake has just enough heat transfer to balance the 1.00kW/m2 of…

A: Given data The power of the heat coming from the sun is given as P = 1 kW/m2. The time duration is…

Q: On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by…

A: Given: The mass of spaghetti is m=0.4 kg. The temperature is ∆T=45.0°C. The time is t=120 s. The…

Q: Following vigorous exercise, the body temperature of an 80.0 kg person is 40.0 °C . At what rate in…

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Q: A container holding 4.20 kg of water at 20.0°C is placed in a freezer that is kept at -20O.0°C. The…

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