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5) 6) 7) 8) |
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5) 4.14E-19 J 6) 7.50E14 Hz 7) 4.72E-19 J 8) 4.76E14 Hz |
Remember
a. Your constants or conversion factors are c = 3.00E8 m/s or 3.00E8 m Hz, 1 Hz = 1 (1/s), h = 6.60E-34 J/Hz
b. If you use equations they are c=(λ)(f), E=(h)(f)
c. Write 1/s as one unit over another not a slash
d. For example, 6.50E-4 m also can be written as 6.50 X 10-4 m
e. For knowing color, leave blank until I get you a visible light spectrum with wavelength scale
Light Equation
1) What is the frequency of light (Hz) if it has a wavelength of 625nm ?
2) What is the frequency of light (Hz) if it has a wavelength of 452nm ?
3) What is the wavelength (in nm) of light that has a frequency of 7.25E14 Hz?
4) What is the wavelength (in nm) of light that has a frequency of 4.76E14 Hz?
Energy Equation (also called Planck's Equation)
5) What is the the energy in light that has a frequency of 6.27E14 Hz?
6) What is the frequency of light (Hz) if the energy (Planck said energy packet size) is 4.95E-19 J?
7) What is the energy (as Planck said, the photon) of the light if it has a frequency of 7.15E14Hz ?
8) What is the frequency of light if the energy is 3.14E-19J ?
Answers (need 3 sig fig in answer):
1) 4.80E14 Hz
2) 6.64E14 Hz
3) 413 nm
4) 630 nm
5) 4.14E-19 J
6) 7.50E14 Hz
7) 4.72E-19 J
8) 4.76E14 Hz