Water enters a boiler at 500 psia as a saturated liquid and leaves at 600°F at the same pressure. Calculate the heat transfer per unit mass of water.

Q: How much energy is required to change a 50g ice cube from ice at -15 degrees celcius to steam at 135…

A: Given  Calculate energy required to change a 50g ice cube from ice at -15 degrees celcius to steam…

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: A thick aluminum block initially at 20°C is subjected to constant heat flux of 4000 W/m2 by an…

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Q: A 20 kg metal rod is heated 100°C with 2000 J of energy, What is the specific heat of the metal?

A: Given data:  Mass (m) = 20 kg Increase in temperature (ΔT) = 100°C Energy (Q) = 2000 J Required:…

Q: What will be the final temperature is a 4 x 10⁷ J of heat is transferred to a 1kg block of aluminum…

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

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Q: A copper rod of radius 1.5 cm and length 0.8 m is used in stoking a fire which is at 415 oC. Find…

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Q: The sides and bottom of the solar collector are usually insulated to Select one: O absorb heat O…

A: Solar collector has a primary function to collect the solar energy ( radiations from sun) , which is…

Q: A 2 KW, 230 volt electric heater is needed to raise the temperature of a 10 lbs water for 30 minutes…

A: 2kw , 230 v Electric heater  10lbs of water , t= 30minutes  Heat loss 22%

Q: What is the heat capacity of water?

A: Specific heat, is the amount of heat required to change the heat content of exactly 1 gram of a…

Q: One end of a 56 cm long copper rod with a diameter of 2.0 Cm is kept at 460 degree Celsius, and the…

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Q: a solid steel sphere of radius 50 cm is heated to 2000 K. If the sphere acts as a perfect radiator,…

A: The equation for the energy radiated by a perfect radiator per unit area per unit time is given by,

Q: When a 1-kg metal pan containing 1 kg of cold water is removed from the refrigerator and set on a…

A: Basic Details         The amount of heat absorbed depends on the mass of the element, the specific…

Q: At 95°F, the majority of the heat from the human body is lost through radiation.  true false

A: Our body losses heat in order to maintain the required temperature to perform our organs…

Q: How much heat energy is added to 2.00 kg of ice at -5.0 degree Celsius is changed to water at 80.0…

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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: When thermal energy is removed from a system, what happens to the average kinetic energy of the…

A: The average kinetic energy of system is directly proportional to temperature. Temperature of an…

Q: If a river having a flow rate of 942 cubic feet per second flows over a waterfall having a height of…

A: Given The flow rate of the river is Q = 942 ft3/s. The height of the waterfalls is h = 14 m. The…

Q: How much heat energy is required to vaporize 1 gram of of ice at 1 Celsius?

A: In the given question, We have to determine the heat energy to vaporize 1 gram of of ice at 1…

Q: Why is the temperature of pasteurization at 60°C?

A: Continuous heat-transfer systems are often used in traditional pasteurisation procedures. These…

Q: A quantity of steam (200 g) at 109 degrees Celsius is condensed, and the resulting water is frozen…

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Q: That same 0.005 kg is dropped off of the top of the Empire State building, which is about 443 meters…

A: Answer:   Given data: Mass (m) = 0.005 KgHeight (h)=443 mVelocity (v)= 5.28 m/s

Q: How much heat transfer (in kilocalories) is required to thaw a 0.450-kg package of frozen vegetables…

A: Given : Mass of the vegetables, m = 0.450 kg Temperature of the frozen vegetable, T = 0C Required :…

Q: How much thermal energy is needed to raise the temperature of 10.0 g of water 15.0 degrees C?

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Q: By imparting heat to a body, its temperature rises by 15 degree C. What is the corresponding rise in…

A: The temperature of body rises by 15 degree C, when imparting heat the body. Let the initial…

Q: A 5.157 kg loose bag of soil falls from unknown height at a construction site. What is height in m…

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Q: An unused wood-burning stove has a constant temperature of 18 °C (291 K), which is also the…

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Q: A 2 kg lead brick initially at 300°C, is dropped into a 1.5 kg insulated copper calorimeter that…

A: Given data is: 1. Mass of lead brick, mlead=2 kg 2. Initial temperature, Tilead=300°C 3. Mass of…

Q: How much heat is added by the pump to 1 pound of the refrigerant and mustbe removed without doing…

A: We have to find that how much heat is added by the pump to 1 pound of the refrigerant and must be…

Q: A 10-kg iron ball is dropped onto a pavement from a height of 100 m. If half of the heat generated…

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Q: How much heat transfer (in kilocalories) is required to thaw a 0.450-kg package of frozen vegetables…

A: It is given that,

Q: The water passing over a water fall drops about 184 m. How much internal energy is produced per…

A: We need to tell how much internal energy is produced per kg as a result of fall.

Q: How much energy does it take to warm up 4.8kg of iron from room temp. to 400 degrees Celsius?

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Q: A 50 cm by 100 cm stainless steel plate with emissivity of 0.85 is maitained at 500 degrees Celsius.…

A: Given: Area of steel body = 50 cm × 100 cm. Emissivity (e) = 0.85 Temperature at which body is kept…

Q: The water in a fishbowl has an evaporation rate of 0.050 g/s. The heat-transfer rate to the bowl by…

A: Write the given values with the suitable variables. m˙=0.050 g/s=0.050×10-3 kg/sQc˙=+36 W Here, m˙…

Q: How much heat energy does it take to boil 2.35kg of water at 100 degrees Celsius completely to steam…

A: Given Data: The mass of water is, m=2.35 kg   The expression for the heat energy in terms of latent…

Q: The air stream flows through a steel pipe of 38.1 mm inner diameter at a velocity of 6.71 m / s and…

A: SOlution: Given that d = 38.1 mm v = 6.71 m/s

Q: Calculate the change in internal energy when 5g of air is heated from 0 degree C to 2 degree C , the…

A: Given:  m = 5 g  T = 0 C  T' = 2 C  c = 0.172 cal/g C

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

A: Given , volume of water = 4.50E+11 m3  density of water = 1000 kg/m3 Difference in temperature of…

Q: What is the rate of heat loss through windows on a chilly-5 degree Celsius day from a typical house…

A: Area of windows (A) = 26 m2Thickness (d) = 4 mm inside temperature (T) = 20oC Outside temperature…

Q: A hot, just-minted copper coin is placed in 103 g of water to cool. The water temperature changes by…

A: Specific heat is the amount of heat energy required per kilogram of mass to raise the object's…

Q: While painting the top of an antenna 225m in height, you accidentally let a 1.00-L water bottle fall…

A: Height,h=225 mVolume of water =1 LiterMass of water,M=1 kgWater specific heat,C=4190 kJ/kgkFind the…

Q: An ideally efficient freezer cools food to 210 K. If room temperature is 300 K, and the machine…

A: Given : Th = 210 K Tc = 300 K Q = 64 J

Q: A thermodynamic system undergoes a process in which its internal energy decreses by 500 J at the…

A: Change in internal energy, dU = - 500 J  work done, dW = - 220 J

Q: How much heat is required to change steam at 130 degrees Celsius to ice at -20 degrees Celsius?

A: The specific heat is the amount of heat per unit mass required to raise the temperature by one…

Q: The specific heat capacity of water is extremely high. If it were much lower, say, one-fifth as…

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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…

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.