Consider a spherical volume of space that is large enough to be considered homogeneous. Also consider a particle on the surface of this volume that is moving away from the center with the Hubble flow. Assuming that the pressure within the volume is negligible, the universe will re-collapse if the particle's Hubble speed is: A. Greater than its escape speed from the mass within the volume B. The same as its escape speed from the mass within the volume C. Less than its escape speed from the mass within the volume
Answers: 1
Another question on Physics
Physics, 21.06.2019 23:30
Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?
Answers: 1
Physics, 22.06.2019 08:30
Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
Answers: 3
Physics, 22.06.2019 11:00
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 22.06.2019 12:10
Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f
Answers: 2
You know the right answer?
Consider a spherical volume of space that is large enough to be considered homogeneous. Also conside...
Questions
Biology, 07.04.2020 05:50
Mathematics, 07.04.2020 05:50
Mathematics, 07.04.2020 05:51
History, 07.04.2020 05:51
Mathematics, 07.04.2020 05:51
Biology, 07.04.2020 05:51
Mathematics, 07.04.2020 05:51
English, 07.04.2020 05:51
Mathematics, 07.04.2020 05:51
History, 07.04.2020 05:52
Mathematics, 07.04.2020 05:52
