The wavelength of blue light is 0.00000045 m.Express this wavelength in scientific notation. A)4.5 × m B)4.5 × m C)4.5 × 10^-7 m D)4.5 × m E)0.45 × m

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Quizplus · Accepted Answer

In scientific notation, we express the wavelength as a number between 1 and 10 multiplied by a power of 10. To do this, we move the decimal point to the left until we have a number between 1 and 10. In this case, we move it 7 places to the left, giving us 4.5. The power of 10 is the number of places we moved the decimal point, but with a negative sign since we moved it to the left. Therefore, the answer is 4.5 × 10^-7, which is choice C.

The Wavelength of Blue Light Is 0