The temperature within the Earth’s crust increases about 1.0 C° for each 30 m of depth. The thermal conductivity of the crust is 0.80 J/s.Co (a) Determine the heat transferred from the interior to the surface for the entire Earth in 1.0 h. (b) Compare this heat to the 1000 W m2 that reaches the Earth’s surface in 1.0 h from the Sun

Q: A runner generates 1260 W of thermal energy. If this heat has to be removed only by evaporation, how…

A: It is given that,

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: 2) A hot bar of lead with Ti Pb, Mpb = .6 kg, is dropped into an iron pot (mFe = .3 kg) that has…

A:

Q: A class of 10 students taking an exam has a power output per student of about 200 W. Assume the…

A: Energy transferred to the room

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 glass window in a home is 0.62cm thick and has dimensions of 1 m x 2 m.  On a certain day, the…

A: Given Data Thickness of the glass window is d=0.62 cm=0.62×10-2 m Area of the window is A=(2×1)=2 m2…

Q: During a marathon race David uses energy at a rate of 272 W. What volume of body fluid does he lose…

A:

Q: Review Conceptual Example 5 before attempting this problem. To illustrate the effect of ice on the…

A:

Q: A 20.0 kg rectangular block of material has a surface area of 2.20 m² fand thickness of 30.0 cm. The…

A: The new volume of an object that has expanded due to a temperature rise is given by V = Vo1+β∆T,…

Q: Suppose a person inhales and exhales 2.25 L of 37.0°C air, evaporating 4.2 × 10-2 g of water from…

A: a) The expression for Q is

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

A: Given: The mass (m) of the man is 80 kg. The temperature (Tf) of the man is 102.2 degrees F. The…

Q: A block of 10.0 kg of solid gold at its melting point of 1,063.00°C changes phase to liquid gold at…

A: Given data: The mass of block is m=10 kg. The melting temperature is T=1063℃. The latent heat of…

Q: 31.0 m of water is converted into 1671 m³ of steam at atmospheric pressure and 100°C temperature.…

A: Using first law of thermodynamics, ∆U=∆Q-W

Q: - The increase in internal energy of 1kg of water at 100°C when it is converted into steam at the…

A:

Q: An unknown material, m1 = 0.25 kg, at a temperature of T1 = 94 degrees C is added to a Dewer (an…

A: Let us solve this problem step by step :-Let m1= mas of unknown material        m2 = mass of…

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

A:

Q: At room temperature, a typical person loses energy to the surroundings at the rate of 62 W. If this…

A: Given data :                 Rate of energy lost  = 62 W

Q: 2m2 of water is converted into 2050 m3 of steam at atmospheric pressure and 100°C temperature. If…

A: From thermodynamics’ first law, the internal energy in the process can be expressed as,

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

A:

Q: A 1.0 m * 1.5 m double-pane window consists of two 4-mm-thick layers of glass (k = 0.78 W/m·K) that…

A: The expression for the total thermal resistance per unit area,

Q: While jogging, a 70.0-kgkg student generates thermal energy at a rate of 1200 WW. To maintain a…

A: While jogging, a 70.0-kgkg student generates thermal energy at a rate of 1200 WW. To maintain a…

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

A:

Q: Steam at 320°C flows in a stainless steel pipe (k =15 W/m·K) whose inner and outer diameters are 5…

A: Diagram of the system:

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: Consider a person standing in a room at 20°C with an exposed surface area of 1.7 m2. The deep body…

A: It is given that,

Q: A hermetically sealed room 4 m x 4 m x 4 m has an internal sensible heat gain of 3 kW. The overall…

A: The  heat loss can be determined by, Q=h×A×T0-Ts

Q: During the winter, the inside of an average house is maintained at 20 °C, while the outside…

A: Therefore  the heat flux from the room to the surroundings is 100 W/m2

Q: A block of 10.0 kg of solid gold at its melting point of 1,063.00°C changes phase to liquid gold at…

A: SOlution: Given that m = 10 kg L =  6.44×104 J/kg

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

A: Given data: The mass of the aluminum block is 2.0 kg. The initial temperature is To=10°C. The…

Q: While swimming, conduction can play a big role in heat loss from the body. The body of one swimmer…

A: Given data: Thickness thickness (b) = 1.6 mm Thermal conductivity of the skin (k)=0.37 W/m.K Water…

Q: A styrofoam container used as a picnic cooler contains a block of ice at 0°C. If 564 g of ice melts…

A: Given data:  Mass of ice (m) = 564 g = 0.564 kg Time (t) = 1 hour = 3600 seconds The heat of fusion…

Q: A 5-mm-thick stainless steel strip (k = 21 W/m·K, r = 8000 kg/m3, and cp = 570 J/kg·K) is being heat…

A: Given Data:   The thickness of the plate is, L=5 mm=0.005 m The thermal conductivity is, k=21 W/m-K…

Q: A composite plane wall consists of a L, = 75 mm thick layer of insulation ( k; = 0.05 W/m-K) and a…

A:

Q: A 60.0-kg runner expends 300 W of power while running a marathon. Assuming 10.0% of the energy is…

A: Determine the energy spent by the runner.

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

A:

Q: The human body, while at rest, produces heat energy at a rate of about 103 W. How much sweat (in g)…

A: The expression for the amount of sweat is,

Q: A Styrofoam container used as a picnic cooler contains a block of ice at 0 oC. If 0.5 kg of ice…

A: It is given that,  m=0.5 kgt=0.79 hr=2844 sec

Q: The body has as a temperature of 30 degrees Celsius. If its surface area is 1.25m^2, what is the net…

A:

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…

A:

Q: The inner and outer surfaces of a 25-cm-thick wall in summer are at 27°C and 44°C, respectively. The…

A: The expression for the convection heat transfer is given as:q˙conv=h(T0-T2)               - 1And,…

Q: 5 kg of fish (Cp =3600 J/KgK) is placed in a storage box that has A=0,45 m2 and k=0,025 W/mK.  The…

A: