In Figure (a), two identical rectangular rods of metal are welded end to end, with a temperature of temperature of T2 - 130°C on the right side. In 4.0 min, 24 J is conducted at a constant rate from th much time would be required to conduct 24 J if the rods were welded side to side as in Figure (b)?

In Figure (a), two identical rectangular rods of metal are welded end to end, with a temperature of temperature of T2 - 130°C on the right side. In 4.0 min, 24 J is conducted at a constant rate from th much time would be required to conduct 24 J if the rods were welded side to side as in Figure (b)?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 49P: The height of the Washington Monument is measured to be 170.00 m on a day when the temperature is...

See similar textbooks

Similar questions

The height of the Washington Monument is measured to be 170.00 m on a day when the temperature is 35.0 . What will its height be on a day when the temperature falls to -10.0 ? Although the monument is made of limestone, assume that its coefficient of thermal expansion is the same as that of marble. Give your answer to five significant figures.
Two concrete spans that form a bridge of length L are placed end to end so that no room is allowed for expansion (Fig. P16.63a). If a temperature increase of T occurs, what is the height y to which the spans rise when they buckle (Fig. P16.63b)?
Suppose a 500-mL beaker is filled to the brim with ethyl alcohol at a temperature of 5.00°C. You may assume the beaker is made of tempered glass, and has effectively zero thermal expansion. What volume, in milliliters, will overflow the beaker when its temperature reaches 24°C? The coefficient of volume expansion for ethyl alcohol is 1.100 × 10-3 /°C. and what volume of water, in milliliters, will overflow under the same conditions? The coefficient of volume expansion for water is 2.10 × 10-4 /°C.
A gold wire 2.4 m long has its temperature lowered by 42oC. Assuming the linear coefficient of expansion has a constant value of 13 x 10-6 K-1 over that temperature range, calculate the change in length of the wire. Express your answer in mm.
Suppose a human body's core internal temperature is 37.0°C, the skin temperature is 34.0°C, the thickness of the tissues between averages 0.85 cm, and the surface area is 1.42 m2. Calculate the rate of heat conduction, in watts, out of the human body.Numeric : A numeric value is expected and not an expression.Q/Δt = __________________________________________
In a manufacturing facility, 5-cm-diameter brass balls (r = 8522 kg/m3 and cp = 0.385 kJ/kg · °C) initially at 120°C are quenched in a water bath at 50°C for a period of 2 min at a rate of 100 balls per minute. If the temperature of the balls after quenching is 74°C, determine the rate at which heat needs to be removed from the water in order to keep its temperature constant at 50°C.
The outer diameter of a glass jar and the inner diameter of its iron lid are both 760 mmmm at room temperature (20.0 ∘C). What will be the size of the mismatch between the lid and the jar if the lid is briefly held under hot water until its temperature rises to 62.5 ∘C, without changing the temperature of the glass? Use the coefficient of linear expansion for iron α= 1.2×10^−5 K^−1. Express answer in millimeters.
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. (INCLUDE FBD)
Two bars, A and B, each of length 2.0 m and cross sectional area 1.0 m2, are placed end to end as shown in the figure. The thermal conductivities of the bars are kA = 439 J/(s × m × K) and kB = 887 J/(s × m × K), respectively. The left end of bar A is maintained at 373 K while the right end of B is maintained at 273 K. Which one of the following statements is true concerning the above situation? For a given time t, the amount of heat transferred through bar A is the same as that through B. For a given time t, the amount of heat transferred through bar A is smaller than that through B. For a given time t, the amount of heat transferred through bar A is less than that through B. The time for a quantity of heat Q to pass through bar A is less than that for B. Time is not a factor in determining the quantity of heat conducted through these bars.
A square hole 4.3 cm along each side is cut ina sheet of copper.Find the change in the area of this holeif the temperature of the sheet is increasedby 66 K. The coefficient of expasion is1.7 × 10^−5 (◦C)−1.Answer in units of cm2.
The 10 m long pipe has an inner radius of 70 mm, an outer radius of 80 mm, and is made of stainless steel (k = 15 W / [m ° C]). The temperature of the inner surface is maintained at 150 ° C, and the outer surface is 30 ° C. At constant conditions and there is no heat generation from the pipe, calculate the heat transfer rate that occurs in the pipe wall. = Answer watt.
Two fluids have been poured into a calorimeter. After the state of thermal equilibrium has been attained, the final temperature of the mixture turned out to be T=303 K. Calculate the initial temperature of the first fluid, if the other has the temperature of T2=323 K, masses were m1 = 20 g, m2=30 g, specific heats c1=4 kJ/kg·K , c2=2 kJ/kg·K /Give the answer in [K] /