A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.41 Cal/h for every pound of body weight. How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 155 lb.)

Q: Two blocks of copper, one of mass 1 kg and the second of mass 3 kg, are at the same temperature.…

A: Using the thermal energy equation, The thermal energy is proportional to the mass Here, both the…

Q: 1.) 11.0 grams of ice at a temperature of 0.00 Co are melted by a heater into water at 0.00 Co.…

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Q: A woman expends 95 kJ of energy walking a kilometer. The energy is supplied by the metabolic…

A: Given data: The energy spend by walking is E=95 kJ/km. The efficiency is η=35%. The enthalpy of…

Q: The freezing point of mercury is -38.8 degree Celsius. What quantity of energy in joules is released…

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Q: According to the USDA, an average, \moderately active" college student needs to eat 2500 calories…

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Q: Should a modern kitchen be air-conditioned? Will this  create cold food(which is supposed to be…

A: Yes, a modern kitchen can be air-condtioned. If the kitchen is an open one then installing an air…

Q: An electric kettle raises the temperature of tea from 50 °C to 125 °C with the usage of 15000 J of…

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Q: An aluminum cup of 250 cm^3 capacity is completely filled with glycerin at 25 C. How much glycerin,…

A: Calculate the change in volume of the glycerin when the temperature of the system is raised from…

Q: If 3.90×105 J of energy is supplied to a container of liquid oxygen at -183°C, how much oxygen can…

A: Given:-  The energy supplied to the liquid oxygen is Q =3.90 x105 J The container contains liquid…

Q: a container has 0.3 kg of water and 0.5 kg of ice at 273 K. How much water vapor should be…

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Q: Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot…

A: The heat of vaporization of the extraterrestrial life form = 167 cal/g. Mass of the sweat lost, m =…

Q: A 45 kg man has a fever of 39.6 degree Celsius instead of the average human temperature of 37 degree…

A: Given data:- mass of the man m = 45 kg specific heat of water c = 4186 J/kg-°C (we know) final…

Q: A 63-g ice cube at 0°C is heated until 56.9 g has become water at 100°C and 6.1 g has become steam…

A: M = 63 g =0.063 kg m = 6.1 g = 0.0061 kg Lice = 3.3 x 103 J/kg Lsteam = 2.26 x 106J/kg Cwater = 4186…

Q: 8. 5.0 moles of an ideal gas that occupies a volume of 30 L at a temperature of 30°C undergoes an…

A: Given value--- Number of mole = 5. initial volume = 30 L. final volume = 20 L. Temperature = 30…

Q: The temperature of water in a swimming pool decreases by 5.0 K during the night. The mass of the…

A: Given, The temperature of water decreases by 5 k mass of water in the pool is 560,000 kg specific…

Q: 3 moles of an ideal polyatomic gas initially with a volume of 2 m3 and a temperature of 3000C is…

A: The work done by the gas compressed isothermally is, W=nRTlnVfVi=nRTln13ViVi

Q: Consider a block of ice, with a mass of 2.00 kg and an initial temperature of -8.00°C. How much heat…

A: Specific heat capacity of a substance is the quantity of heat needed to raise the temperature per…

Q: A 25.95 g sample of methanol at 35.60 °C is added to a 38.65 g sample of ethanol at 24.70 °C in a…

A: SOlution:

Q: In an electrically heated home, the temperature of the ground in contact with a concrete basement…

A: Given information: Here, To and Ti are the temperature of the wall’s outside and inside surface…

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: 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 Latent Heat of Fusion of a substance if 1200 J melts 40 grams of it? (A) 20 J/g B) 30…

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Q: What is the minimum amount of energy required to completely melt a 7.25kg lead brick which has a…

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Q: How much energy does a freezer have to remove from 1.5-kg of water at 20^0C to turn it into ice at…

A: The conversion of water into ice takes place in three steps as below, Water at 20º C to water at 0º…

Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 °c? The answer…

A: Given:- mass of water = 4g  currently temperature of the water = 100°C°C Find:-  How much energy is…

Q: In Rusayl cable factory, 150 kg of raw copper is molten to make wires and cables. If 20.1 MJ of heat…

A: The expression for latent heat of fusion is given by Q=mLL=QmL=20.1 MJ150 kgL=0.134 MJkg

Q: How much internal energy is generated when a 10.9-g lead bullet, traveling at 4.60 x 1o2 m/s, comes…

A: Given data: Mass (m) = 10.9 g Initial velocity (v) = 4.60 × 102 m/s Final velocity (vf) = 0 m/s,…

Q: A 1.00-mol sample of hydrogen gas is heated at constant pressure from 300 K to 420 K. Calculate the…

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Q: Suppose that the breakfast of a typical 65 kg adult gives him 1.85 x 105 J of energy. How long does…

A: Given: The mass of the adult m = 65 kg The energy had in breakfast E = 1.85 x 105 J The acceleration…

Q: How much water remains unfrozen after 61.8 kJ is transferred as heat from 489 g of liquid water…

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Q: a resting person has skin temperature 35C if his room temperature is 30C and the body surface area…

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Q: After eating a 200 g bottle of yogurt, Bob decides to go for a run to burn off the extra energy. The…

A: Given: Mass of the yogurt eaten by bob = 200 g Energy from the yogurt = 5.4 MJ/kg Metabolic rate of…

Q: How much heat needs to be removed from 500 g of water at 10.0 oC to form ice at –10.0 oC? The…

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Q: Suppose you have 2.5kg of steam at 100 degrees celcius occupying 6.5 meters cubed at a pressure of…

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Q: A 1500-W hotplate is used to heat up a 1.04kg aluminum pot filled with 1.22kg of water and a 0.855kg…

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Q: During a bout with the flu an 80 kg man ran a fever of 39.0°C (102.2°F) instead of the normal body…

A: Heat required is Q= mcΔT  specific heat c for aluminium is : 900 J/kg.K ΔT = 39 -37 oC = 2oC.

Q: In a certain solar house, energy from the Sun is stored in barrels filled with water. In a…

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Q: 3. 120 grams of water are heated from zero degrees Celsius to 30.0 degrees Celsius. Which…

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Q: A bullet of mass 10 g moving with speed of 9ung y 210 m/s in stopped suddenly. If all its kinetic…

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Q: How much heat is absorbed by 100 g of ice at -10⁰C to become water at 20⁰C?

A: