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What is the unit for frequency?
Hertz (Hz or 1/s or s^-1)
What is the unit for energy?
Joules (J)
What is the unit for wavelength?
m
What is the symbol for wavelength?
λ (lambda)
What is the symbol for frequency?
v
What is the symbol for energy?
E
What formula would you use to solve the following problem?: Calculate the energy of an EM wave with a frequency of 5.00x10^14 Hz.
E=hv
What formula would you use to solve the following problem?: Calculate the wavelength of an EM wave with a frequency of 5.00x10^14 Hz.
c=λv
What is Planck's constant?
h = 6.626 x 10^-34 Jxs
What is the speed of light?
c = 3.00 x 10^8 m/s/s
Visible light has a wavelength between _________ - __________ (approximately).
400 nm to 750 nm (4.00x10^-7 m to 7.50x10^-7 m)
What color of visible light has the smallest amount of energy? the greatest amount of energy?
smallest: red; largest: purple/pink
Why does each element have a different atomic emission spectra?
each element has a unique arrangement of electrons
How does an electron become "excited"?
The electron absorbs energy and jumps to a higher energy level.
The atomic emission spectra uses which part of the Electromagnetic (EM) spectrum?
visible light
What is the frequency of a wave whose wavelength is 5.25x10^-7 m? (include proper units in your answer)
c=λv -->v=c/λ=(3.00x10^8)/(5.25x10^-7)= 5.71x10^14 Hz
