The Kilauea volcano in Hawaii is the world’s most active, disgorging about 5 X 105 m3 of 1200C lava per day. What is the rate of heat transfer out of Earth by convection if this lava has a density of 2700 kg/m3 and eventually cools to 30C? Assume that the specific heat of lava is the same as that of granite.

Q: A cubical piece of heat-shield-tile from the space shuttle measures 0.13 m on a side and has a…

A: The amount of heat transferred is

Q: An aluminum washer has an outer radius ro=1.3cm and an inner radius of ri=0.43cm. The temperature of…

A: Given ,         initial temperature Ti=282k         Final temperature Tf=630k        mass of…

Q: Lake Erie contains roughly 4.00 x 1011 m3 of water. (a) How much energy is required to raise the…

A:

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: You have mW = 3.7 kg of water in an insulated container. You add mI = 0.75 kg of ice at TI = -21°C…

A: Given information: The symbols have the same meaning as described in the question.

Q: An aluminum rod is 23.5 cm long at 20°C and has a mass of 350 g. If 10,500 J of energy is added to…

A:

Q: A cylindrical copper rod of length 1.2 m and cross-sectional area 4.8 m2 is insulated to prevent…

A: Given Length of copper rod L= 1.2 m Area of cross section of cylindrical rod A= 4.8 m2 Temperature…

Q: A shell-and-tube heat exchanger with 2-shell passes and 12-tube passes is used to heat water (cp =…

A:

Q: Lake Erie contains roughly 4.00 ✕ 1011 m3 of water. (a) How much energy is required to raise the…

A:

Q: The world's most active volcanoes, such as the Kilauea volcano in Hawaii, can disgorge about 5 ✕ 105…

A: Given: The volume of the lava is 5×105 m3. The initial temperature of the lava is 1025 °C. The final…

Q: A cubical piece of heat-shield-tile from the space shuttle measures 0.15 m on a side and has a…

A:

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: An aluminum bar has a cross-section that is 2.5 cm by 4.8 cm and is 1.3 m long. Aluminum has a…

A:

Q: A solid cylindrical bar conducts heat at a rate of 133 w from a hot to a cold reservoir under…

A:

Q: A ceramic insulator is baked at 400∘C400∘C and cooled in a room in which the temperature is…

A: Given : Temperature at which ceramic insulator is baked (To)= 400° C Room temperature (Tm) = 25° C…

Q: A 10 meters x 14 meters house is built on a 12-cm-thick concrete slab which has a thermal…

A:

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: If you pour 0.0100 kg of 20.0C water onto a 1.20-kg block of ice (which is initially at -15.0C),…

A: given quantities: mass of water (m) = 0.0100 kg mass of block of ice (M) = 1.20 kg specific heat of…

Q: A 2.9 kg lump of aluminum is heated to 93°C and then dropped into 8.0 kg of water at 5.0°C. Assuming…

A: Given Mass of the aluminum lump is ma=2.9 kg Mass of water is mw=8.0 kg Temperature of the aluminum…

Q: A 5-cm-external-diameter, 10-m-long hot-water pipe at 80°C is losing heat to the surrounding air at…

A: The external diameter of the pipe,

Q: A thirsty nurse cools a 2.00 L bottle of a soft drink (mostly water) by pouring it into a large…

A:

Q: The Andong Dam Lake in South Korea holds 1.25 x10° m of water. (pwater = 1000 kg/m³) a. How much…

A:

Q: The roof of an electrically heated home is 12m long, 16m wide, and 0.50m thick, and is made of a…

A: Given : Length , L = 12 m ; Width, w = 16 m  Thickness, x = 0.50 m ; Thermal conductivity, K = 0.8…

Q: A 2.5 kg lump of aluminum is heated to 96oC and then dropped into 9.0 kg of water at 5.1oC. Assuming…

A:

Q: You mix mI = 1.2 kg of ice at TI = -21°C with mW = 4.8 kg of water at TW = 72°C in an insulated…

A: Given, mI = 1.2 kg TI = -21°C  mW = 4.8 kg TW = 72°C cI = 2.10×103 J/(kg⋅°C)  cW = 4.19×103…

Q: A cylindrical copper rod of length 1.2 m and cross-sectional area 4.8 cm2 is insulated along its…

A: The cross-section area of the copper rod,

Q: Suppose you have a 1kg piece of copper at 50°C , which you put into an isolated container with 2 kg…

A: Mass of copper piece = 1 kg  Initial temperature of copper = 50 degree celsius  Mass of water = 2 kg…

Q: Assume Lake Erie contains 4.80 ✕ 1011 m3 of water, and assume the water's density is that of water…

A: Given : Volume of water (V) = 4.80 x 1011 m3 Initial temperature (Ti) = 15.8°C Final temperature…

Q: 15.

A:

Q: Water with a mass of mW = 0.400 kg and temperature of TW = 18.5°C is poured into an insulated bucket…

A:

Q: Steel rods (r = 7832 kg/m3, cp = 434 J/kg·K, and k = 63.9 W/m·K) are heated in a furnace to 850°C…

A: It is given that,

Q: Your 500 mL diet soda, with a mass of 500 g, is at 20°C, room temperature, so you cool it by adding…

A: When there are two system at different temperature then heat flow from the system at higher…

Q: Lake Erie contains roughly 4.00 x 1011 m3 of water. (a) How much energy is required to raise the…

A:

Q: Physics for Engineers (Answer only. No long explanation needed. Rate will be given) The…

A: Given α =  27.0x10-6/C  Intial temperature = Ti = 30 °C Final temperature = Tf = 700 °C Radius = R =…

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: On a multi-layered square wall, the thermal resistance of the first layer is 0.005 ° C / W, the…

A: Thermal resistances are 0.005 °C/w, 0.2 °C/W, 0.1 °C/W ∆T = 60°C

Q: A 0.70-kg piece of metal is heated to 80.0 °C and dropped into an ideal calorimeter containing 1.2…

A: Given:- Mass of the metal is mm=0.70 kg Initial temperature of the metal is tm=80.0°C Specific heat…

Q: A 20.0 g ice cube is dropped into 200 g of water in a thermally insulated container. If the water is…

A: mi=Mass of ice=20 gci=Specific heat of ice=0.53 cal/g Kcw=Specific heat of water=1 cal/g…

Q: The initial temperature of 60 g of ice is -200C. The specific heat capacity of ice is 0.5 cal/g.C0…

A:

Q: Consider a flat sheet of iron at 300 K does not receive any radiation from its surroundings. The…

A: (a) Let P be defined as the radiation lost by the radiator. Therefore, P=σAT4 Here, σ is the…

Q: If a 0.85 km (at 0°C ) section of straight railroad track made of steel is assumed to behave as a…

A:

Q: 3.33 moles of an ideal gas at 20◦C undergoes an isobaric expansion from 2.33 m3 to 4.40 m3 . How…

A:

Q: A thermal window, with an area of 6.0m ^ 2, is constructed of two layers of glass, each 4.0mm thick,…

A: Given, Area of window, A=6 m2 Th. conductivity of window glass & air, k1=0.8 W/m.C∘ &…

Q: Cold water (cp = 4180 J/kg·K) enters the tubes of a heat exchanger with 2-shell passes and 20-tube…

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,…

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.