miathegeek97
24.05.2021 •
Physics
A microbe is ejected from its home planet by a violent event such as a volcanic eruption or a meteorite impact. The subsequent fate of the microbe depends on the balance of the two main forces that act on it, namely, the gravitational attraction of the star around which the planet orbits and radiation pressure due to the luminosity of the star.
Required:
Model the microbe as a dark sphere of radius a at a distance r from the star. Assume that the total power radiated by the star P = 1.0 x 1031 J/s (greater than that of the sun by a factor of 30,000). Derive an expression for the radiation force on the microbe. Give your answer in terms of p, r,c and a.
Solved
Show answers
More tips
- S Science and Technology How to Restore the Diamond Shine to Your Tarnished Silverware...
- C Computers and Internet Boost your processor performance with these easy tips...
- L Leisure and Entertainment When will Maslenitsa start?...
- F Food and Cooking Discovering the Mysterious Fruit of Feijoa...
- B Business and Finance How to Open an Online Store? A Detailed Guide for Beginners...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
Answers on questions: Physics
- P Physics 1st: BRAINLIEST 2nd: Points List your favorite element and where we can find information such as atomic #, mass and the symbol for all elements....
- C Computers and Technology A database of the virus is called...
- E English Commonlit: THE THREE SISTERS, AVENGED: A DOMINICAN DRAMA How do paragraphs 16-17 contribute to the development of ideas in the text?...
- M Mathematics Solve: 13/19 - (1/19) A. -12/19 B. -14/19 C. 14/19 D. 12/19 Please help! I m not good with fractions :(...
- H History The Zhou dynasty followed the Mandate of Heaven. What was the Mandate of Heaven? Be quick!!! a. A rule that meant men were only allowed to be in power b. A rule that gave the...
Ответ:
Explanation:
The radiation pressure for a total absorption of the incident light is
P = S / c
Where S is the pointing vector, which is defined as the energy flux per unit area
S = I = P_r / A
where P_r powre irradiate by star, A is the area over which the energy emitted by the star is distributed, which is the surface of a sphere
A = 4π r²
substituting
S =
Pressure is defined by
P = F / A₂
Where A₂ is the area over which the force is applied, in this case the area of the microbe
A₂ = π a²
P = F / π a²
we substitute
Ответ:
3. dark matter
empty space could also be a simple vacuum