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.

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?