The hydrogen spectrum has a red line at 656 nm, and a blue line at 434 nm. What is the first order angular separation between the two spectral lines obtained with a diffraction grating with 5000 rulings/cm?
a. 7.7°
b. 16.6°
c. 6.6°
d. 3.2°
e. 19.2°
C
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Which of the following people did NOT accept a heliocentric model for the universe?
a. Kepler b. Copernicus c. Tycho d. Galileo e. Newton
When a positive charge is released and moves along an electric field line, it moves to a position of
A. lower potential and lower potential energy. B. lower potential and higher potential energy. C. higher potential and lower potential energy. D. higher potential and higher potential energy. E. greater magnitude of the electric field.
What are the three sources of heat acted together to bring young Earth to its melting point
What will be an ideal response?
Before it was found that when a substance burns, it is combining with oxygen, it was hypothesized that the burning material released a substance called ______________
Fill in the blank(s) with correct word