Question

In: Physics

. Typically when astronomers use the term flux, they are referring to an energy flux, or...

. Typically when astronomers use the term flux, they are referring to an energy flux, or the amount of energy flowing through an area (typically, spherical) in unit time. This is the same flux we refer to when we calculate luminosity from flux and distance. Assuming that flux is due solely to photons, derive an expression for themomentum flux of the photons.

Solutions

Expert Solution


Related Solutions

When economists use the term "big tradeoff" when discussing efficiency they are referring to the tradeoff...
When economists use the term "big tradeoff" when discussing efficiency they are referring to the tradeoff between producer surplus and consumer surplus. efficiency and fairness. deadweight loss and producer/consumer surplus. marginal cost and marginal benefits. external costs and external benefits. Imposing a sales tax on sellers of a product has an effect that is similar to which of the following? anything that decreases the demand and shifts the demand curve leftward an increase in demand for the good a decrease...
When referring to retirement plans the term "qualified" means that the plan                              
When referring to retirement plans the term "qualified" means that the plan                                      ____ Is provided by an employer that is granted a "good employer" award by the Department of Health & Human Services. Satisfies the requirements of one or more provision(s) of the Internal Revenue Code. Provides benefits only for highly compensated employees. Provides benefits only for employees who are not highly compensated. Under the law governing qualified pension plans, which of the following are the most restrictive age     ____ and service...
Describe what astronomers are talking about when they speak of dark matter and dark energy, and...
Describe what astronomers are talking about when they speak of dark matter and dark energy, and clearly distinguish between them. what fraction is dark matter and what fraction is dark energy? What observational evidence have astronomers amassed to propose the existence of these phenomena?
What does the term piecewise mean when referring to linear functions? Is a piecewise function always...
What does the term piecewise mean when referring to linear functions? Is a piecewise function always continuous across its entire domain? Explain your answer and give an example. Give an example of a piecewise function using functional notation and state its domain
Takeover is a general and imprecise term referring to the transfer of control of a firm...
Takeover is a general and imprecise term referring to the transfer of control of a firm from one group of shareholders to another. This can occur through any one of three means: acquisitions, proxy contests, and going-private transactions. Discuss THREE (3) basic legal procedures that one firm can use to acquire another firm.                                                                                                                          (CLO3:PLO2:C2) One important reason for an acquisition is that the combined firm may generate greater revenues than two separate firms. Increase in revenue may come from...
Low-energy lightbulbs typically cost $3.75, have a life of nine years, and use about $1.85 of...
Low-energy lightbulbs typically cost $3.75, have a life of nine years, and use about $1.85 of electricity a year. Conventional lightbulbs are cheaper to buy, for they cost only $.55. On the other hand, they last only about a year and use about $6.85 of energy.    a. If the real discount rate is 6%, what is the equivalent annual cost of the two products? (Do not round intermediate calculations. Enter your answers as a positive value rounded to 2 decimal...
Referring 8051 User’s Manual ,study how to use timer when operating in mode 2. Understand the...
Referring 8051 User’s Manual ,study how to use timer when operating in mode 2. Understand the manual (p. 112~)
Why might a firm use short-term sources of funds? Which is typically more flexible and easier...
Why might a firm use short-term sources of funds? Which is typically more flexible and easier to access, short or long term debt? Why might a firm prefer long term debt over short term debt?
The energy flux of solar radiation arriving at Earth orbit is 1353 W/m2. The diameter of...
The energy flux of solar radiation arriving at Earth orbit is 1353 W/m2. The diameter of the sun is 1.39x109 m and the diameter of the Earth is 1.29x107 The distance between the sun and Earth is 1.5x1011 m. (a) What is the emissive power of the sun as calculated from the parameters given above? (b) Approximating the sun’s surface as black, what is its temperature (as calculated from the parameters given above)? (c) At what wavelength is the spectral...
Referring to the definition of the Helmholtz energy (Eq. 6.5 in your text), show that dA...
Referring to the definition of the Helmholtz energy (Eq. 6.5 in your text), show that dA represents the maximum amount of total work that a system can perform at constant T and V.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT