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Mathematics, 31.10.2019 22:31 ayoismeisjjjjuan
The wavelength of violet light in a spectrum is about 0.4 meters. which number best approximates this length as a power of 10
a. 4 x 10^-7
b. 4 x 10^-6
c. -4 x 10^7
d. 4 x 10^7
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