What is the surface area of the filament

Assignment Help Physics
Reference no: EM131127426

A) As our bodies burn food as fuel, we radiate energy. Assume a person has a body surface area of 1.80 m2 and an emissivity of 0.620 (a reasonable value for someone wearing clothes). What is the power radiated by the person? (Normal body temperature is 37.0A?°C.) ___ W

B) A light bulb filament has an emissivity of 0.29. At a temperature of 2790 K, the filament radiates 55 W of power. What is the surface area of the filament? ___ m^2

Reference no: EM131127426

Questions Cloud

What is the relative luminosity of a star : What is the relative luminosity (in solar units) of a star with the same surface temperature as the Sun but only one-tenth the radius
Explain is this statement true false or uncertain : “Human fear is the source of stock market crashes, so these crashes indicate that expectations in the stock market cannot be optimal.” Is this statement true, false, or uncertain? Explain your answer.
The income statement for the current year : The adjusting entry for accrued fees was omitted at March 31, the end of the current year. Indicate which items will be in error, because of the omission, on
A chemical reactor process whose production rate : A chemical reactor process whose production rate is a function of catalyst addition is shown in block diagram form in Figure P10.7 [10]. The time delay is T = 50 s, and the time constant τ is approximately 40 s.
What is the surface area of the filament : A light bulb filament has an emissivity of 0.29. At a temperature of 2790 K, the filament radiates 55 W of power. What is the surface area of the filament? ___ m^2
Can we expect the value of the dollar to rise : Can we expect the value of the dollar to rise by 2% next week if our expectations are optimal?
Journalize the adjusting entries : The balance in the unearned fees account, before adjustment at the end of the year, is $112, 790. Of these fees, $69,735 have been earned.
A numerical path-controlled machine turret : A numerical path-controlled machine turret lathe is an interesting problem in attaining sufficient accuracy [2, 23]. A block diagram of a turret lathe control system is shown in Figure P10.8.
Identify the positions interests and batnas of each party : Using this scenario, identify the positions, interests and BATNAs of each party. Label key negotiation and conflict theory concepts illustrated by the scenario, possibly including (for example) target point, resistance point, settlement zone, attr..

Reviews

Write a Review

Physics Questions & Answers

  The electron and proton in a hydrogen atom

The electron and proton in a hydrogen atom are separated by a distance of approximately 5.3x10^(-11) m. Discover the magnitudes of the electric force and the gravitational force among the two particles.

  Find the kinetic energy and speed of the bob

A pendulum bob of mass 0.5 kilogram swings on the end of a 0.80 meter string, Find the kinetic energy and speed of the bob when it passes through the equilibrium position

  Find the required damping constant

A spring oscillator is designed with a mass of 0.110 kg. It operates while immersed in a damping fluid, selected so that the oscillation amplitude will decrease to 1.00% of its initial value in 9.12 s. Find the required damping constant for the sy..

  Find what is the work done by the field on the electron

A uniform electric field of magnitude 410N/C pointing in the positive x-direction acts on anelectron, which is initially at rest. What is the work done by the field on the electron

  Determine the angular velocity of the masses

four identical 2kg point masses are fixed at the corners of a massless rectangle of length 20cm and width 15cm. determine the angular velocity of the masses

  Obtain the speed of the can just before it hits the ground

A painter is standing on scaffolding that is raised at constant speed. As he travels upward, he accidentally nudges a paint can off the scaffolding and it falls a distance 15.4m to the ground. find the speed of the can just before it hits the groun..

  What is the tention in support cable

A sign weighing 400N is suspended at the end of a 350N uniform rod that is hinged at the wall. What is the tention T in support cable

  Find the distance between the work and the magnifying glass

An engraver uses a magnifying glass (f = 8.80 cm) to examine some work, as in the drawing. What is the distance between the work and the magnifying glass

  Find the time rate of change of electric flux between plates

A novice skier, starting from rest, slides down a frictionless 41.0 incline whose vertical height is 230.How fast is she going when she reaches the bottom.

  Find how far from the base of the building the hammer lands

A hammer slides down a roof of angle theta (respect to ground). It slides along the roof distance D. Find how far from the base of the building the hammer lands

  A taut rope has a mass of0165kg and a length of380m what

a taut rope has a mass of0.165kg and a length of3.80m. what power must be supplied to the rope in order to generate

  How much work has the electric field done on this proton

Two very large charged parallel metal plates are 10.0cm apart, How much work has the electric field done on this proton by the time it reaches the positive plate

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd