Which evidence supports the big bang theory? Planetesimals form in debris disks.
Most galaxies are moving toward us.
Uniform background radiation is detected in every direction.
Galaxies spin faster than they should based on visible matter.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great. d) about 10 times as great.

To a of 4 x hz is 1. 0. mm nm nm

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%