The two objects in the drawing are made from the same material (emissivity = 0.500) and have a temperature of 323 K. One is a cube ofedge length ro = 0.280 m, and the other is a sphere of radius ro. They are placed in a room whose temperature is 435 K. What is themagnitude of the difference between the net power absorbed by the cube and the sphere? The surface area of a sphere is 4πr².TOTO

Step 1: Step 2: Step 3: Step 4:

Answered: The two objects in the drawing are made…

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

An ideal gas in a container with a sliding piston is held at atmospheric pressure. Heat is added and the volume increases from 1 m^3 to 3 m^3. The initial temp of the gas is 0 degrees celcius. Question A: How many moles of gas are in this container? Question B: How much work does the gas perform on the piston? Please answer in J Question C: What is the final temperature of the gas? Please answer in degrees celcius Question D: what is the change in internal energy of the gas? Please answer in J Question E: How much heat was added to the gas? Please answer in J
A 25-kg iron cannonball is fired with speed 220 m/s. If it hits a concrete wall and half of its initial kinetic energy (KE =mv²) is converted to internal energy in the cannonball (or heats the cannonball), then how much does the temperature of the cannonball increase? The specific heat of iron is 450 J/kg.°C. А. 32.16°C D. 22.82°C В. 28.90°C Е. 24.18°C C. 21.72°C F. 26.89°C
A sample of a monoatomic ideal gas has a pressure of p and volume V. When the gas is warmed, it’s pressure triples and volume triples. This warming process includes two steps, the first at constant pressure and the second at constant volume. Determine the amount of energy transferred to the gas by heat.
What is the value of Heat Flux in KW/m2 in the Heat Flux Gauge?
m = 0.593 kg of methanol in atmospheric pressure is heated with an electric heater from T₁ = 30.2 °C to its boiling point. After the heating my methanol is vaporized. Heating and vaporizing takes t = 450.41 s with n=0.59 heater's efficiency. What is the volume of methanol? V = What is the energy required for heating? E₁ = 1 kJ m³ Your last answer was interpreted as follows: 1 What is the energy required for vaporizing? Ev = 1 kJ Your last answer was interpreted as follows: 1 What is the power of the heater? P = 1 с Your last answer was interpreted as follows: 1 Your last answer was interpreted as follows: 1 What is the electr. energy needed for heating and vaporizing? Eε = 1 kJ Your last answer was interpreted as follows: 1 h Do not leave any fields blank. If you don't know the answer, insert 1 for example. Insert the answer with 3 significant digits without rounding the answer. Constant P Tb Value Unit 2.53 1165 786.3 64.7 °C umges Quantity heat capacity kg K kJ kW kg kg LAN Symbol h…
A thermal camera (LWIR) images a scene of rocks around a shallow pond just before sunrise. The measured brightness temperature of the pond is 305 K, while the brightness temperature of the rocks is 288 K. Assuming the kinetic temperatures of the pond and rocks are the same, estimate the emissivity of the rocks. Assume the emissivity of the water is 1.00. Report your answer to two significant digits (e.g. 0.12). What is the emissivity of the rocks?
A small metal cube with a thermal mass mc and an initial temperature 0 is dropped into a container of water that is actively maintained at a constant temperature 0w. The cube quickly comes to rest on the bottom surface of the container. The bottom surface is maintained at a constant temperature 0 (note that this is different from 0w). The thermal resistance between the cube and the water is Rcw while the thermal resistance between the bottom surface of the container and the cube is RCB. The temperature of the cube is denoted by 0c. a) Draw the system schematic indicating the assumed directions of the heat transfer rates. Label all the nodes and system parameters. b) Derive the governing equation for the temperature of the cube, 0c. c) Where does to appear in the system schematic and how does it affect the governing equations? d) Calculate the steady-state temperature of the cube, css, assuming the following system parameters: 0o = 21°C, 0B = 6°C, 0w = 0°C, Rcw = 2°C/W, and RCB = 4°C/W
U7
A 2.6 kg lump of aluminum is heated to 96°C and then dropped into 11.0 kg of water at 5.4°C. Assuming that the lump-water system is thermally isolated, what is the system's equilibrium temperature? Assume the specific heats of water and aluminum are 4186 and 900 J/kg-K, respectively. Number i Units
A small building has a heater inside it running with its door left open. The heater is the only device in the building. When the heater runs, it consumes 250 W. The building is 3m X 3m X 2.5m. The temperature outside is 25 degrees celsius, and the the wind is blowing at 10km per hour. Estimate the temperature inside the building if the walls and ceiling are made of 13 mm thick plywood and 13 mm thick drywall with 100 mm of air inbetween. The floor is perfectly insulated and there aren't any cracks in the walls ceiling or door frame. Make any other reasonable assumptions as needed
Rubbing your hands together warms them by converting work into thermal energy. a. If a woman rubs her hands a total of 19 times (forward and backwards count separately), at a distance of 7.75 cm per rub, and with an average frictional force of 39 N, what is the temperature increase of her hands, in degrees Celsius? The mass of tissues warmed is only 0.100 kg, mostly in the palms and fingers, and the heat capacity of her hands is 3500 J/(kg⋅°C).
Solar panels on one of the NWU solar car prototype, have an emissivity of e = 0.819. When in direct sunlight, they absorb energy at a rate of 877 J/s per square meter of surface. Assume that the only energy loss is due to the emission of radiation. What equilibrium temperature are the panels reaching?

SEE MORE QUESTIONS

Recommended textbooks for you

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Lecture- Tutorials for Introductory Astronomy

Physics

ISBN:

9780321820464

Author:

Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden

Publisher:

Addison-Wesley

College Physics: A Strategic Approach (4th Editio…

Physics

ISBN:

9780134609034

Author:

Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher:

PEARSON

SEE MORE TEXTBOOKS