Question

How much power is radiated by a tungsten sphere (emissivity ϵ = 0.35) of radius 17...

How much power is radiated by a tungsten sphere (emissivity ϵ = 0.35) of radius 17 cm at a temperature of 18 ∘C? If the sphere is enclosed in a room whose walls are kept at -5 ∘C, what is the net flow rate of energy out of the sphere?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.75 cm is...
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.75 cm is suspended within a large evacuated enclosure whose walls are at 315 K. What power input is required to maintain the sphere at a temperature of 3000K if heat conduction along the supports is negligible?
A sphere of radius 0.348 m, temperature 47.1°C, and emissivity 0.704 is located in an environment...
A sphere of radius 0.348 m, temperature 47.1°C, and emissivity 0.704 is located in an environment of temperature 71.6°C. At what rate does the sphere (a) emit and (b) absorb thermal radiation? (c) What is the sphere's net rate of energy exchange?
With a radius of 1cm, A iron sphere is heated to 999 degrees C.   If we...
With a radius of 1cm, A iron sphere is heated to 999 degrees C.   If we Assume iron has an emissivity of 0.68, what is the power radiated by the iron sphere if it is placed in a room temperature environment? How many 100 Watt light bulbs would you need to generate the same amount of power?
A sphere of radius 0.500 m, temperature 27.0 oC and emissivity 0.850 is located in an...
A sphere of radius 0.500 m, temperature 27.0 oC and emissivity 0.850 is located in an environment of temperature 77.0 oC. At what rate does the sphere (a) emit and (b) absorb thermal radiation? (c) What is the sphere’s net rate of energy exchange (J/s)?
Modern Physics Question --> Topic: Thermal Radiation & Blackbodies Q: A 2.30 cm diameter tungsten sphere...
Modern Physics Question --> Topic: Thermal Radiation & Blackbodies Q: A 2.30 cm diameter tungsten sphere is heated to a temperature of 2000 degree C. At this temperature tungsten radiates only 30% of the energy radiated by a blackbody of the same size and temperature. (a) Determine the temperature of a perfectly black spherical body of the same size that radiates at the same rate as the tungsten sphere. (b) calculate the diameter of a perfectly black spherical body at...
A sphere of radius 0.500 m, temperature 26.1°C, and emissivity 0.765 is isolated in an environment...
A sphere of radius 0.500 m, temperature 26.1°C, and emissivity 0.765 is isolated in an environment of temperature 77.0°C. (a) At what rate does the sphere emit thermal radiation? W (b) At what rate does the sphere absorb thermal radiation? W (c) What is the sphere's net rate of energy exchange? W
A uniform solid brass cylinder of mass 0.50 kg and radius of 0.030 m starts to...
A uniform solid brass cylinder of mass 0.50 kg and radius of 0.030 m starts to rotate about its cylinder axis with an angular velocity of 60 rad/s. a. What is the angular momentum of the cylinder and how much work is required to reach this rate of rotation, starting from rest? b. After the cylinder has reached 60 rad/s, it is heated up from room temperature (20oC) to 100oC. The mean coefficient of linear expansion of brass is 2.0...
Homework-9 Due: Q) A fuel plate is fabricated from 0.3 cm thick 1.5% enriched uranium. The...
Homework-9 Due: Q) A fuel plate is fabricated from 0.3 cm thick 1.5% enriched uranium. The cladding is 0.25 mm 304 stainless steel. The coolant saturation temperature is 260 oC. The average thermal neutron flux is 2.5 X 1014 neutrons/cm2 /s. The surface temperature of the clad is 350 oC. Assume any missing data to answer the following questions:. 1) Write an expression of the heat generated per unit volume 2 What is the heat flux at the surface of...
a) i. Explain the difference between elastic and plastic behaviour. [2 marks] ii. Explain how stretching...
a) i. Explain the difference between elastic and plastic behaviour. [2 marks] ii. Explain how stretching an object gives rise to internal shear. [3 marks] iii. What is meant when a material is described as having non-isotropic properties? [1 mark] b) Water circulates throughout a house in a hot water heating system. The water is pumped at a speed of 0.50 ms–1 through a 4.0 cm diameter pipe in the basement at a pressure of 3.0 x 105 Pa. What...
A grey body is one whose absorptivity 1. does not vary with temperature and wavelength of...
A grey body is one whose absorptivity 1. does not vary with temperature and wavelength of the incident ray 2. is equal to its emissivity 3. varies with temperature 4. varies with wavelength of the incident ray A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal 1. potential energy. 2. kinetic energy. 3.temperature. 4. intermolecular forces of attraction. A liquid of density 1000 kg/m3...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT