Posted by **qwerty** on Wednesday, January 16, 2013 at 12:24am.

In a universe where the scale factor is proportional to t^α, where t is time and α is a constant less than one, the universe has:

* the sign of the acceleration is undetermined

* negative acceleration

* positive acceleration

* zero acceleration

## Answer this Question

## Related Questions

- Cosmology - The most cosmological measurements show that the universe is ...
- Cosmology - In an Einstein-de Sitter (matter-dominated) universe, the scale ...
- Cosmology - A curvature constant of k=0, as used in the Friedmann equation, ...
- Cosmology - The solution of Olbers' Paradox is: - The universe is opaque at ...
- Science - The galaxies in the universe are all flying away from each other. The ...
- physics - The galaxies in the universe are all flying away from each other. The ...
- Physics help - The galaxies in the universe are all flying away from each other...
- science - which of the following possibly outcomes regarding the universe do ...
- physics - In Physics, it is important to use mathemat- ical approximations. For ...
- Universe and the Stars - what s the osc illating theory of universe? the ...