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A: Intensity of sunlight = 1000 Wm2Area of roof of the house (A) = 6 m2Volume of water = 1 m3We know,…
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Q: A sample of gaseous krypton is heated with an electrical coil. If 39.5 Joules of energy are added to…
A: Given: Energy added, E = 39.5 joule Mass, m = 11.5 g Initial temperature, Ti = 23 °C = 296 K
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Q: On a brisk walk, a person burns about 331 Cal/h. If the brisk walk were done at 3.5 mi/h, how far…
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Q: What methods of heat transfer move the heat produced by an electric space heater? (…
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Q: 5. During the combustion of 1.00 g of coal, the temperature of 500 g of water inside the calorimeter…
A: Given data: Mass of water (m) = 500 g Initial temperature = 25.0 °C Final temperature = 30 °C…
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Q: 100.°C was passed into a flask containing 550.0g of water at 32°C where the steam condensed. How…
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Q: A teakettle contains 3 pounds of water at room temperature (68°F). If 20% of the electric energy to…
A: Solution: Specific heat of water is 4.187 kJ/kgC. Convert 3pounds to kg. 3 pounds =3×0.4536=1.36 kg…
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A: SOlution:
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Q: A block of ice (m = 11 kg) at a temperature of T1 = 0 degrees C is placed out in the sun until it…
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Q: The heating element of a 1200 Watt electric stove can reach temperatures of 815 °C when turned all…
A: Heat required to boil water Q = mL L = latent heat of vaporization = 2260 KJ/kg
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Q: 1. Radiation is the chief method of energy transfer А. from the Sun to Earth satellite С. from water…
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Q: Q 4. Differentiate between Active and Passive Solar Thermal Energy Systems via suitable examples.
A: SOlution: to differentiate between active and passive solar energy
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Q: Beryllium has roughly one-half the specific heat of liquid water (H20). Rank the quantities of…
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Q: 7- A ball of 2 kg mass falls to the ground from a height of 3 m. During the fall and bounce, 10% of…
A: Potential energy of the ball=mgh=2×10×3=60J When the ball comes down, its potential energy is…
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Q: The sun generates 2kW /m² when used as a source for solar collectors. A collector with an area of…
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Q: Determine the temperature of water in the underground lake, in Kelvin
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- Is a temperature difference necessary to operate a heal engine? State why or why not.Presents the diagram of the problem, necessary formulas, clearance and numerical solution: The surface of the Sun has a temperature of about 5,800 K. The radius of the Sun is 6.96x108 m. Calculate the total energy radiated by the Sun each second. Assume the emissivity is 0.986.A sample of gaseous krypton is heated with an electrical coil. If 39.5 Joules of energy are added to a 11.5 gram initially at 23.0degreeC, what is the final temperature of the krypton?
- Calculate the heat that must be supplied to raise the temperature of 2 kg of water from 25∘25∘C to its boiling point at atmospheric pressure.The average specific heat of water in the range 25−100∘C25-100∘C is 4.184 J K−1g−1K-1g-1.(b)How long will a 2 kW heater take to supply this energy?The sun generates 1kw/m2 when used as a source for solar collectors. A collector with an area of 1m2 heat water. The flow rate is 3.0 liters/min. What is the temperature rise in water? The specific heat of water is 4200 J/kg . 0CA car emits, on average, 150 g of CO2 gas emission per km driven. Estimate to order of magnitude the total mass of CO2 emission saved from our class being held virtually for 12 weeks.
- On a brisk walk, a person burns about 331 Cal/h. If the brisk walk were done at 3.5 mi/h, how far would a person have to walk to burn off 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.) =______miHow much energy does a freezer have to remove from 1.5-kg of water at 20^0C to turn it into ice at -12^0C? specific heat capacity of water is 4184 \frac{J}{kg^0C) specific heat capacity of ice = 2090 \frac{J}{kg^0C) heat of fusion of ice = 3.33x10^5\ \frac{J}{kg}?QUESTION 12 Given a material of specific heat c in Cal/gramC^o and mass 6 grams. If the material is heated from a temperature of 4 C^o to a temperature of 33 C^o then which of these expressions yields the amount of heat added to the material in calories? a. 6 times c divided by (33 + 4) b. 6 times c times (33 - 4)
- Determine the heat required in BTUs to raise the temperature of 3 lbm of water by 100oF. Assume that Cp is 1.0BTU/Lbmo F. a) 1 BTU b) 5 BTU c) 100 BTU d) 300 BTUSweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2,430 kJ/kg at body temperature, and the body can produce as much as 1.6 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be the maximum sustainable metabolic rate, in watts, if 81% of the energy used by the body goes into waste heat?During a winter time in the past, Chicago temperature was -25°F. What are corresponding values on the Celsius and Kelvin scales? detailed solution with all the explanations