A bricklayer drops lump of mortar from a point 30 meters up the side of a brick building he is working on and it hits the ground with a splat. Mortar has a specific heat of 1200 J/(kg∙K). By how many degrees will the mortar be warmer, assuming that all the energy it acquires during the drop is converted to internal energy inside the mortar and not the ground?

Q: (a) A shirtless rider under a circus tent feels the heat radiating from the sunlit portion of the…

A:

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 pond with a flat bottom has a surface area of 810 m 2and a depth of 2.5 m. On a warm day, the…

A: The rate at which heat is transferred by conduction is given as Qt=kATh-TcLHere Q is the heat…

Q: (a) Calculate the rate in watts at which heat transfer through radiation occurs (almost entirely in…

A:

Q: An adult person radiates heat to the surroundings at about the same rate as a 100-watt electric…

A: Power is rate of change of energy. P = E/t  E = P×t  where, E = Energy in Joule P = Power in Watt  t…

Q: Eight spherical droplets, each of radius r of a liquid of density p and surface tension o coalesce…

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Q: During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled…

A: The expression for the required rate of heat transfer is,

Q: Radioactive decay of granite and other rocks in Earth's interior provides sufficient energy to keep…

A: Given:The average release of heat per year is, Havg=0.03 J/kg.yearSpecific heat capacity, c=800…

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

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Q: A metal calorimeter has mass m, = 0.25 kg and contains m, = 5 kg of watcr, and the whole system is…

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Q: Heat transfers from your lungs and breathing passages by evaporating water. (a) Calculate the…

A:

Q: Feeling a bit cool, you turn up the thermostat in your living room. A short time later the air is…

A: From the ideal gas law we have PV=nRT where P=PressureV=Volumen=Number of molesR=Gas…

Q: The heat capacity of air at room temperature and pressure is approximately 21 J×mol-1×K-1. a) How…

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Q: Substance A has seven times the specific heat of substance B. Equal masses of the two substances, at…

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Q: ou are in space, compare the rate of heat loss for bare skin vs. a nice thick layer of…

A: Average mass of human m=75 kg and average/room temperature T=298 K. Specific heat of human body…

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 mFinal Velocity (v)= 5.28 m/sInitial…

Q: To help keep his barn warm on cold days, a farmer stores 860 kg of solar-heated water (Lf = 3.35E+5…

A: Given Mass of the water m =860 kg  so the energy released by the water from cooling this to 11.8oC…

Q: During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled…

A:

Q: Radioactive decay of granite and other rocks in Earth's interior provides sufficient energy to keep…

A: Given,

Q: Radioactive decay of granite and other rocks in Earths interior provides sufficient energy to keep…

A: Given,

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

A:

Q: (a) Cherry-red embers in a fireplace are at 850ºC and have an exposed area of 0.200 m2   and an…

A: Given:-              To calculate the rate at which heat transfer by radiation by the…

Q: The ground temperature a few meters below the surface is fairly constant throughout the year and is…

A: It has been observed that the temperature below the ground is more stable than the temperature above…

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 65kg box is being pulled across a floor that has friction with a rope that has a tension of 50 N…

A: When multiple forces applies on a object, then splitting them is best way to solve problem. In this…

Q: winter hikers dog generates heat at a rate up to a maximum value of 120 W. She is hiking on a brisk…

A:

Q: During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled…

A:

Q: Consider a room that is initially at the outdoor temperature of 20oC. The room contains a 40-W…

A: Given Data:Power in a lightbulb Power in a TV set Power in a refrigerator Power in a iron  Assuming…

Q: A large body of lava from a volcano has stopped flowing and is slowly cooling. The interior of the…

A:

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: A container holds 1.0g of argon at a pressure of 8.0atm How much heat is required to increase the…

A: The number of moles of the Argon is, n=mM=1.0 g39.9 g/mol=0.025 mol The molar heat capacity at…

Q: Lucky for us, our Earth is warmed by the Sun during the day. Every night though, Earth radiates some…

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Q: In an air conditioner, 12.65 MJ of heat transfer occurs from a cold environment in 1.00 h. (a) What…

A: The heat transfer from a cold environment,   The latent heat of fusion of ice,

Q: A 50 g lead ball is propelled straight from a cannon at a speed of 40 m/sand it is stopped in an…

A:

Q: The human body, while at rest, produces heat energy at a rate of about 100 W. How much sweat (in g)…

A:

Q: (a) A 1.8 cm thick wooden floor covers a 4.0 m × 5.5 m room. The subfloor is at a temperature of…

A: (a) Given : Thickness of a wooden floor (L) = 1.8 cm = 0.018 m Area of room = 4.0 × 5.5 = 22 m2…

Q: A microwave oven is used to heat 250 g of water. On its maximum setting, the oven can raise the…

A: Given: The mass of water is 250 g. The initial temperature is 20°C. The final temperature is 100°C.…

Q: The Sun delivers radiant energy to Earth at a rate that averages approximately 1.3 kW per square…

A:

Q: To help prevent frost damage, 4.00 kg of 0ºC water is sprayed onto a fruit tree. (a) How much heat…

A: Given: The mass of the water mw = 4 kg The mass of the tree mT = 200 kg The specific heat capacity…

Q: You are expecting to serve 32 cups of soft drinks toyour guests tonight. Each cup will hold 285 g of…

A: To find: To find the mass of the ice using the given values

Q: A 220-lb athlete drinks a glass of soda (125 calories) and walks up to the top of a Library…

A: We will use first law of thermodynamics which states in terms of equation is that,…

Q: (a) Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have…

A: The rate of heat conduction is given by Qt=kAT2-T1d

Q: (a) A typical student listeningattentively to a physics lecture has a heat output of 100 W. Howmuch…

A: Given: Heat output is 100W. Specific heat of air is cair=1020Jkg K. Density of air is ρ=1.20kg m3.