Tuesday
July 22, 2014

Posts by qwer


Total # Posts: 20

science
where are the deepest parts of the pacific basin located?

science
what is the transition between the shelf and the deep seafloor called?

science
roughly how fast do most lithospheric plates move?

science
what are some characteristics that describe subduction zones?

science
what is the force driving the crustal plates?

science
where are the youngest seafloor rocks found?

science
what do these things have in common: paleomagnetism, seafloor spreading, pangaea, transform faults, fracture zones, seamount chains, and pacific hotspots?

science
how do geologists know the earth is layered inside?

science
who would be considered to be the "first ocean scientist"?

science
which hemisphere of the earth contains the greater proportion of ocean surface?

science
until recently, many scientists were tentative in their acceptance for the theory of the chemical evolution of life on earth. what has changed their minds?

physics
Consider a triangular pulse having a wave function (1)0()(1)00xNforbxbxxNforxbbforelsewhere a) Find N using the normalization conditi...

physics
Hydrogen atom is initially in the ground state. It is excited by a photon bombardment and it then undergoes a transition from n = 3 to n=2 state. a) What is the frequency of the bombarding photon? b) What are the energy, momentum and the wavelength of the emitted photon? c) As...

physics
A monochromatic light beam with energy 204eV is used to excite the Be+3 (H –like atom with Z=4) from its ground state to some excited state m. Neglect the finite nuclear mass correction. a) Find the quantum number m of this excited state. b) Following this transition the...

physics
The third longest wavelength in the Paschen series in hydrogen corresponds to what transitions?

physics
Calculate the ionization energy of doubly ionized Lithium, which has Z=3. Construct also the energy level diagram for it.

physics
Evaluate the Rydberg constant R using Bohr theory and show that its value is R = 1.0974x10-1.

physics
In the Sun, an ionized helium atom makes a transition from n =6 state to the n = 2 state, emitting a photon. Can that photon be absorbed by hydrogen atoms present in the Sun? If so between what energy states will the hydrogen atom jump?

physics
Explain what ideas led Bohr to suggest a new atomic model; and state Bohr postulates. Explain also, in words, what the correspondence principle is in atomic physics.

physics
idk

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