89. A thick, vertical iron pipe has an inner diameter of 0.065 m. A thinaluminum disk, heated to a temperature of 85 °C, has a diameter thatis 3.9 x 10-$ m greater than the pipe's inner diameter. The disk is laidon top of the open upper end of the pipe, perfectlv centered on it. andallowed to cool. What is the temperature of the aluminum disk when thedisk falls into the pipe? Ignore the temperature change of the pipe.

Given Data: The inner diameter of an iron pipe is, d1=0.065 m The temperature at which aluminium…

Answered: 89. A thick, vertical iron pipe has an…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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4. A box with total wall area of 0.6m2 and wall thickness 3cm is used to cool drinks. The inner and outer surface of the box are 0°C and 50°C respectively. Determine: (i) The rate of heat flow into the box (ii) The total heat flow in one day (iii) The mass of ice melted Take: Thermal conductivity of the box material to be 0.010 W/(m. K) Heat of fusion of ice to be Lf = 3.34 x 105 J/kg 86,400 seconds are in a day.
Some cookware has a stainless steel interior 1a = 17.3 * 10-6K-12and a copper bottom 1a = 17.0 * 10-6K-12 for better heat distribution. Suppose an 8.0-in. pot of this construction is heated to 610 °Con the stove. If the initial temperature of the pot is 22 °C, what isthe difference in diameter change for the copper and the steel?
1. A cylindrical aluminum rod is positioned between two enclosed volumes, each con- taining a moles of water. One of these volumes consists of steam and liquid water in thermal equilibrium, while the other contains water and ice in thermal equilibrium. The rod has a length of 24.0 cm, and a cross-sectional area of 14.0 cm². It conducts heat from the hotter volume (condensing steam) to the cooler one (melting ice) in steady-state. Treat the heat loss to the surroundings by the two volumes and the rod as negligible. steam & water aluminum rod water & ice (a) Find the rate (in watts) at which heat is being transferred through the rod. (b) Find the rate (in grams per second) at which the steam is condensing.
36. GO A copper pipe with an outer radius of 0.013 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 4.0 °C, and the temperature of the pipe, at 3.0 m from the faucet, is 25 °C. In fifteen minutes, the pipe conducts a total of 270 J of heat to the outdoor faucet from the house interior. Find the inner radius of the pipe. Ignore any water inside the pipe.
13.
4. A 3-m-high wall and 5-m-wide wall consists of long 18-cm x 30-cm cross section horizontal brick (k = 0.72 W/m.°C) with 12-cm x 24-cm fiberglass insulation material (k = 0.043 W/m.°C) as the center core. The bricks are separated by 3-cm-thich plaster (k= 0.22 W/m. °C). There are also 2-cm-thich plaster on each side of the brick and a 2-cm-thick foam (k = 0.026 W/m. °C) on the inner side of the wall, as shown in Fig. Q3. The indoor and outdoor temperatures are 20 °C and -10 °C, respectively, and the convection heat transfer coefficients on the inner and the outer sides are h1 = 10 W/m² °C and h₂ = 25 W/m² °C, respectively. Assuming one-dimensional heat transfer and disregarding radiation, calculate the rate of heat transfer through the wall. Foam Plaster 11.5 cm Brick 2cm 2cm 18 cm 2cm 30 cm 1.5 cm Fiberglass. insulation
51. The Kilauea volcano in Hawaii is the world's most active, disgorging about 5 × 10° m³ of 1200°C 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 30°C? Assume that the specific heat of lava is the same as that of granite.
If the temperature of the surface of the object is 690.8 K, then calculate its value in °F. O a. 417.80 O b. 784.04 O. 1702.84 O d. 1275.44
5. Heat is conducted through a slab composed of parallel layers of different conductivities, 0.0050 and 0.0025 cal/cm2 -sec-C/cm and thickness 0.36 and 0.48 cm, respectively. The temperatures of the outer faces of the slab are 96 and 8C, find the temperature of the interface Pls include fbd
4. A well-insulated styrofoam bucket contains 150 g of ice at 0 °C. If 21 g of steam at 100 °C is injected into the bucket, what is the final equilibrium temperature of the system?(cwater=4186 J/kg.°C, Lf=3.35 × 10° J/kg, Ly=2.26 × 10° J/kg) °C ssf60ss ssf60 ss 60 ssf6u
9. The conduction heat flux through a wall is known to be 2020 W/m² and the convection heat flux from the outer surface of the wall is 1650 W/m². It is also known that the temperature on the outer surface and the surrounding are 373 K and 298 K respectively. Find the emissivity, &, of the outer surface of the wall. = 5.67 x 10-8 W/m²K4) (o= (Ans: ε = 0.569)
1 Thermal Expansion A steel rod is 3.000 cm in diameter at 25 °C. A brass ring has an inner diameter of 2.992 cm at 25 °C. At what common temperature – i.e., the same temperature for the rod and ring – will the ring just fit onto the rod? The coefficient of linear expansion of steel is 11 x 10-6/°C. The coefficient of linear expansion of brass is 19 x 10-6/°C.

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