11. You are asked to design a cylindrical steel rod 0.50 m long, with a circular cross section, that will conduct 150.0 J/s from a furnace at 400 °C to a container of boiling water. What must the rod's cross sectional area be? Note the thermal conductivity of steel is 50.2 W/m K. * A. 0.00498 cm^2 B. 0.498 cm*2 C. 37.4 cm 2 D. 49.8 cm^2 E. 4980 cm^2

11. You are asked to design a cylindrical steel rod 0.50 m long, with a circular cross section, that will conduct 150.0 J/s from a furnace at 400 °C to a container of boiling water. What must the rod's cross sectional area be? Note the thermal conductivity of steel is 50.2 W/m K. * A. 0.00498 cm^2 B. 0.498 cm*2 C. 37.4 cm 2 D. 49.8 cm^2 E. 4980 cm^2

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)...

See similar textbooks

Similar questions

2. Gain or loss of energy? write G or Lin the blank A. I When water freezes. В. During sublimation. C. When water boils. D. g When ice melts. E. During condensation. F. When water turns to steam. 3. is it a Solid, Liquid, or Gas? write S, Lor G in the blank A. Water at 50° C. B. Water at 120°C. C. Water at 10° C. Water at -5°C. E. Water at 100°C. F. * Water at 285 K. (bonus) D. Match each term to the correct description. You will only use each term once. 4. Insulator A. A region of space that contains no matter. e 5. Conductor B. Allows convection, but is a very good insulator. 6. Vacuum C. Any material that easily allows heat to move through it. a D. Allows convection; can be a good conductor of heat. 7. Solid E. Materlal that resists the movement of heat through it. 8. Liquid
A piece of copper of mass 2kg is cooled from 150°C to 50°C. The specific heat capacity of copper is 400 J/ kg °C. The heat loss is Oa. 4000 J b. 80000 J Oc. 40000 J O d. 800 J
5. A copper cylinder is initially at 20.0 °C. By how much should the temperature increase so that its length will be 0.150% larger than it is at 20.0 °C? Note for copper a = 1.7 x 10^-5 K^-1. * A. 29.4 °C B. 49.4 °C C. 88.2 °C D. 108 °C O E. 2941 *c
The density of air at 20 degree celcius is 1.204 kg/m3. The density at temperature 100 degree celcius is 0.9467 kg/m3. If an average size hot air balloon envelopes a volume of 2200 m3, how much weight can it lift (including the balloon itself)? a. 5.55 kN b. 11.1 kN c. 20.4 kN d. 26.0 kN
14. A granite ball of radius 2.00 m and emissivity 0.45 is heated to 135°C. a. Convert the given temperature to Kelvin. b. What is the surface area of the ball? c. If the ambient temperature is 25°C, what net power does the ball radiate? [408 K, 50.27 m², 2.54 x10° W] 15 The Glament of a 75 W light hulh ie at a tomporature oE 2200 K Accuming the Glament has an
.A 3.00-kg copper rod is 45.0 cm long at 24.8°C. If 45 000 J are transferred to the rod by heat, what is its change in = 387 J/kg °C and acopper -= 17.0 × 10-6/°C. ength? Ccopper a. 34.4 cm b. 0.0297 cm c. 0.133 cm d. 0.0445 cm e. More information is needed.
What is the specific heat of an 800g unknown substance whose temperature changes by 78◦C after absorbing 1000 calories of heat? a. 0.016 cal/g◦C b. 0.016 J/g◦C c. 62,400 J/kg◦C
2. A perfect gas has a value of R = 319.2 J/kg.K and k 1.26. If 120 kJ is added to 2.27 kg of this gas at constant pressure when initial temperature is 32.2 deg Celsius, find T2, AH, AU and W
An airship has an internal volume of 450,000 m3. How many grams of hydrogen gas can be contained in the airship at 0.90 atm and 30.0 °C? Select one: a.1.6 × 104 g b.3.3 × 107 g c.3.3 × 104 g d.1.6 × 107 g
Choose the correct answer 1. You have a 90 cm long iron rod at 15 ° C that heats up to 300 ° C. What happens with the rod is that: A. It melts. B. Double the length. C. Decrease its length a few centimeters. D. Increase its length by a few millimeters. 2. A student blows up a balloon and places it in his home freezer. After a long time, the balloon is removed from the freezer and it is observed that: A. The volume decreases as a certain amount of air escapes. B. It remains the same, because the air inside it does not expand or contract. C. The volume increases, because the air inside it expands D. The volume decreases as the air inside it contracts
A copper cylinder has a mass of 0.0758 kg and a specific heat of 386 J/kg Co. It is heated to 80.5° C and then put in 0.0657 kg of unknown liquid whose temperature is 19.5° C. The final temperature of the mixture is 31.9° C. What is the specific heat of the unknown liquid? a. 875 J/kg C b. 1000 J/kg C c. 900 J/kg C d. 1745 J/kg C
If a copper pipe requires 6.7 J to raise its temperature by 1 °C, what is the quantity of heat required to raise the temperature from 25°C to 29°C? Question options: a. 72.8 J b. 362 J c. 623 J d. 27.1 J e. 263 J