(a) An astronomer's infrared telescope is able to detect radiation with a wavelength of 7.68 x 10 -4 meters. Write this number

Question

(a) An astronomer's infrared telescope is able to detect radiation with a wavelength of 7.68 x 10 -4
meters. Write this number in standard notation.
(b) The diameter of Mars at its equator is approximately 6790 kilometers. Write this number in scientific notation.

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