If you drop a rock from a height of 13 m, it accelerates at 9.8 m/s2
and strikes the ground
1.62882 s later.
If you drop the same rock from half that
height, what will be its acceleration?
1. the same.
2. about half.
3. Unable to determine.
4. more.
5. 0.

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

What is the momentum of a 2 kg object moving at 15 meters per second

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.