In the n = 1 state, the energy of the hydrogen atom is -13.6 eV. What is its energy in the n = 2 state?
A) -4.53 eV B) -1.51 eV C) -3.40 eV D) -6.79 eV
Question 2
To maximize the magnification of a refracting telescope, what lenses should you choose?
A) The objective lens should have a small focal length and the eyepiece should have a large focal length.
B) The objective lens and eyepiece should both have large focal lengths.
C) The objective lens and eyepiece should both have small focal lengths.
D) The objective lens should have a large focal length, but it doesn't matter what the focal length of the eyepiece is.
E) The objective lens should have a large focal length and the eyepiece should have a small focal length.
Energy flow and chemical recycling in ecosystems.
Atom formation
The Energy Sector
Renewable Energy Sources Globally
Global energy consumption is rising rapidly
Hydrogen bond