Discuss the value of Ho if the universe were closed and starting to collapse
What will be an ideal response?
In the contractive phase, Ho would be negative and all galaxies would blueshift towards each other.
You might also like to view...
An alternative to the nebular theory for the formation of the solar system suggests that the planets formed from blobs of gas that had been gravitationally pulled out of the Sun during the near-collision with another star
This idea is referred to as the A) fragmentation hypothesis B) collision-ejection hypothesis C) encounter hypothesis D) tidal distortion hypothesis
Approximately what proportion of stars have masses lower than the Sun?
A) 90% B) 10% C) 50% D) 70%
An astronaut in space swings a ball attached to a string in a circular motion. If the string suddenly breaks, how will the ball move?
A) It will move in a straight line in whichever direction it was moving when the string broke. B) It will continue to move in the same circular path it had been following before the string broke. C) It will instantly come to a stop. D) It will move toward the astronaut. E) It will move in a large elliptical path around the astronaut.
A block is dragged without acceleration in a straight-line path across a level surface by a force of 6 N. What is the force of friction between the block and the surface?
A) less than 6 N B) 6 N C) more than 6 N D) need more information