An electron in an L shell of an atom has the principal quantum number:
A. n = 0
B. n = 1
C. n = 2
D. n = 3
E. n = ∞
A photon with the smallest wavelength in the continuous z-ray spectrum is emitted when:
A. an electron is knocked from a K shell
B. a valence electron is knocked from the atom
C. the incident electron becomes bound to the atom
D. the atom has the greatest recoil energy
E. the incident electron loses all its energy in a single decelerating event

calculate d hydrostatic difference in blood pressure between the brain and d foot in the person of height 1.8m where d density of blood is 1.06x10^3kg/m

I b learner o o

Where are the physics genius/geniuses na.?

What is an ideal pendulum?

Where are the physics gurus na' una don die ne?.. Safe d life of this thread na..