Consider a spatially flat, matter-dominated Universe (Ωm = Ω = 1), which is contracting with time. How does the density perturbation, δ ≡ (rho − rho¯)/rho¯, evolve with time in such a Universe? Here rho is the (average) density?

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7

2. circled insects have mutations, or changes to their dna. how many of the offspring insects in this generation have mutations?