a) A brass rod of length 2L and a steel rod of length L have the same cross-sectional area are attached end to end as shown in the figure. The brass end is placed in a boiling water which is maintained at a constant temperature of 100 °C. The steel end is placed in an ice bath held at constant temperature of 0.0 °C. The system is in a steady state. Calculate the temperature T at the point where the two rods are joined. Ksteel =50.2 W/m-K_and_kbrass =109 W/m-K [Answer in 3 significant figures] 0°C Steel L T 100°C Brass 2L

a) A brass rod of length 2L and a steel rod of length L have the same cross-sectional area are attached end to end as shown in the figure. The brass end is placed in a boiling water which is maintained at a constant temperature of 100 °C. The steel end is placed in an ice bath held at constant temperature of 0.0 °C. The system is in a steady state. Calculate the temperature T at the point where the two rods are joined. Ksteel =50.2 W/m-K_and_kbrass =109 W/m-K [Answer in 3 significant figures] 0°C Steel L T 100°C Brass 2L

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter20: Kinetic Theory Of Gases

Section: Chapter Questions

Problem 69PQ

See similar textbooks

Similar questions

Equal 0.400-kg masses of lead and tin at 60.0C are placed in 1.00 kg of water at 20.0C. (a) What is the equilibrium temperature of the system? (b) If an alloy is half lead and half tin by mass, what specific heat would you anticipate for the alloy? (c) How many atoms of tin NSn, are in 0.400 kg of tin, and how many atoms of lead NPb are in 0.400 kg of lead? (d) Divide the number NSn of tin atoms by the number NPb of lead atoms and compare this ratio with the specific heat of tin divided by the specific beat of lead. What conclusion can be drawn?
(a) Calculate the rate of heat conduction through a double-paned window that has a 150-m2 area and is made of two panes of 0.800 cm-thick glass separated by a 1.00 cm air gap. The inside surface temperature is 15.0 C, while that on the outside is 10.0 OC. (Hint: There are identical temperature drops across the two glass panes. First find these and then the temperature drop across the air gap. This problem ignores the increased heat transfer in the air gap due to convection.) (b) Calculate the rate of heat conduction through a 1.60-cm-thick window of the same area and with the same temperatures. Compare your answer with that for part (a).
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 14107 N/m2 and a temperature of 25.0 . The cylinder is cooled to dry ice temperature ( 78.5 ) to reduce the leak rate and pressure so that it can be safely repaired. (a) What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled and that there is no phase change? (b) What is the final pressure if one-tenth of the gas escapes? (c) To what temperature must the tank be cooled to reduce the pressure to 1.00 atm (assuming the gas does not change phase and that there is no leakage during cooling)? (d) Does cooling the tank as in part (c) appear to be a practical solution?
A hollow aluminum cylinder 20.0 cm deep has an internal capacity of 2.000 L at 20.0C. It is completely filled with turpentine at 20.0C. The turpentine and the aluminum cylinder are then slowly warmed together to 80.0C. (a) How much turpentine overflows? (b) What is the volume of the turpentine remaining in the cylinder at 80.0C? (c) If the combination with this amount of turpentine is then cooled back to 20.0C, how far below the cylinders rim does the turpentines surface recede?
Consider an object with any one of the shapes displayed in Table 10.2. What is the percentage increase in the moment of inertia of the object when it is warmed from 0C to 100C if it is composed of (a) copper or (b) aluminum? Assume the average linear expansion coefficients shown in Table 16.1 do not vary between 0C and 100C. (c) Why are the answers for parts (a) and (b) the same for all the shapes?
What is me Fahrenheit temperature of a person with at 39.0°C fever?
(a) If a 500mL glass beaker is filled to the brim with ethyl alcohol at a temperature of 500C, how much will overflow when its temperature reaches 210C ? (b) How much less water would overflow under the same conditions?
(a) Estimate the specific heat capacity of sodium from the Law of Dulong and Petit. The molar mass of sodium is 23.0 g/mol. (b) What is the percent error of your estimate from the known value, 1230 J/kg ? `
(a) Use the ideal gas equation to estimate the temperature at which 1.00 kg of steam (molar mass M=18.0 g/mol) at a pressure of 1.50106 Pa occupies a volume of 0.220 m3. (b) The van der Waals constants for water are a=0.5537 Pa m6/mol2 and b=3.049105 m3/mol. Use the Van der Waals equation of state to estimate the temperature under the same conditions. (c) The actual temperature is 779 K. Which estimate is better? `
Item 9 Part A How much heat energy must be added to a 8.0-cm-diameter copper sphere to raise i Express your answer with the appropriate units. μÅ Q= Value Submit Request Answer kJ CONC temperature from -50°C to 130°C?
Don't use chat gpt It Chatgpt means downvote
A2] The figure shows a copper disk of radius r and thickness r, with a hole through its centre of radius a: Find an expression for the volume of the copper. b) Find an expression for the increase in temperature of the copper AT if it is supplied with an amount of heat Q at constant pressure. The density and specific heat (heat capacity per unit mass) of copper at constant pressure are PCu and ccu respectively. (You should treat these quantities as constants even though thermal expansion will slightly reduce the density, for example). c) of the disk AA/A when its temperature increases by AT, if the coefficient of linear expansion of copper is aCu- (change in dimension)", such as (Ar). Find an expression for the fractional increase in area of the top surface You should ignore terms of the order