A tungsten filament in a lamp is heated to a temperature of 2.6 103 K by

Question:

A tungsten filament in a lamp is heated to a temperature of 2.6 × 103 K by an electric current. The tungsten has an emissivity of 0.32. What is the surface area of the filament if the lamp delivers 40.0 W of power?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

See More Books

Question Posted: Jun 06, 2016 05:31 AM

See More Questions

Size of a Light Bulb Filament. The operating \temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the surface area of the filament of a 150-W...
A tungsten filament is heated to 2700 K. At what wavelength is the maximum amount of radiation emitted? What fraction of the total energy is in the visible range (0.4 to 0.75 m m)?Assume that the...
A certain lightbulb has a tungsten filament with a resistance of 19.0 ' when cold and 140 ' when hot. Assume that the resistivity of tungsten varies linearly with temperature even over the large...
When the wavelength of radiation falling on a metal is changed from 500 nm to 200 nm, the maximum kinetic energy of the photoelectrons becomes three times larger. The work function of the metal is...
If contract promises were not excused because of acts of war, would the clearing and settlements clients of Bank of New York change their behavior? If so, how? What reliance behavior would be...
In distance-vector routing, bad news (increase in a link metric) will propagate slowly. In other words, if a link distance increases, sometimes it takes a long time for all nodes to know the bad...
For the multiple linear regression model, show that $S S_{\mathrm{R}}(\boldsymbol{\beta})=\mathbf{y}^{\prime} \mathbf{H y}$.
Allen Abbott has a wide-curving, uphill driveway leading to his garage. When there is a heavy snow, Allen hires a local carpenter, who shovels snow on the side in the winter, to shovel his driveway....
Andy purchased a 6% coupon rate commonwealth Government Securities (CGS), which mature in 2022 June. Assume the par value is 100, and YTM is 5% P.A. Calculate the CGS price when Andy purchased this...
11. Is it appropriate to insist that a financial ratio, such as the current ratio, exceed a certain absolute standard (e.g., 2:1)? Why? 12. Which firm is more profitable Firm A with a total asset...
An incandescent light bulb has a tungsten filament that is heated to a temperature of 3.00 103 K when an electric current passes through it. If the surface area of the filament is approximately 1.00...
A person of surface area 1.80 m2 is lying out in the sunlight to get a tan. If the intensity of the incident sunlight is 7.00 102 W/m2, at what rate must heat be lost by the person in order to...
Terephthalic acid (TPA), a raw material in the manufacture of polyester fiber, film, and soft drink bottles, is synthesized from p-xylene (PX) in the process shown below. A fresh feed of pure liquid...
Calculate the future value of $9,000 in a. Four years at an interest rate of 9% per year. b. Eight years at an interest rate of 9% per year. c. Four years at an interest rate of 18% per year. d. Why...
What are the primary uses of buckwheat, canola, grain sorghum, and sunflower?
Briefly discuss the importance of small and medium size enterprises to the economies in the Caribbean
What are the points of intersection for Diversity, Cultural Awareness, and Globalization and their impact in the workplace?
Refer to the following adjusted trial balance after the first year of operations. Accounts Debit Credit Cash $1,900 Accounts Receivable 8,500 Supplies 400 Equipment 19,300 Accumulated...
Evidence from blood tests can identify a suspect with a probability of about 1 in 200. Evidence from DNA tests often provides probabilities claimed to be less than 1 in 10 million. If you were a...
Draw a Feynman diagram for the reaction n + v p + .
Calculate from the vapor pressure equation the value of dT/dp neat p = 1 atm for the liquid-vapor equilibrium of water. The heat of vaporization at 100oC is 2260Jg-1. Express the result in Kelvin/atm.
The pressure of water vapor over ice is 3.88 mm Hg at 2oC and 4.58 mm Hg at 0oC. Estimate in J mol-1 the heat of vaporization of ice at 1oC.
Consider a version of the example (26)(32) in which we let the oscillators in the solid move in three dimensions. (a) Show that in the high temperature regime ( >> h) the vapor pressure is (b)...
MUN Faculty of Business Administration | Managing Social Enterprises: Marketing Ultimate project goal Write a letter that appeals to me (or your audience), and convinces them to take a key action, or...
A franchisee has yearly gross sales of $200,000, net profit of $30,000, gross profit of $15,000, and brand royalties of 5 percent. What amount is the franchisee likely to pay the franchisor per annum?
Some remedies and preventive measures have been put forth to slow or forestall currency crises, such as capital controls and intermediate regimes (i.e., fixed or floating exchange rates). Discuss...

A tungsten filament in a lamp is heated to a temperature of 2.6 103 K by

Question:

Step by Step Answer:

Use Stefans law of radiati...View the full answer

Physics

Students also viewed these Mechanics questions