Light travels through a vacuum at a velocity of 299,792,458 m/s. Astronomers use the speed of light to calculate long distances and the energy of photons. In most mathema the speed of light is rounded to 300,000,000 m/s and then written in scientific notation. If the speed of light is in m/s and then written in scientific notation, what is the coefficient? O 30 3.0 0.3 Correct. When all the quantities are in standard scientific notation, the number coefficient is the first part of the number between 1 and 10. If the speed of light is in m/s and then written in scientific notation, what is the exponent? 0 X x Incorrect. Review the definition. While light travels incredibly fast, we use it's speed to resemble various distances and times. For example, a jiffy is the amount of time it takes for light to travel the length about 3.0 x 10 -24 S. What is the exponent of a jiffy? -24 Correct! The exponent is the number above and to the right of the 10 in x 10, including the minus sign, if any. Why is it incorrect to say the coefficient is 30? A coefficient must be less than 10. O A coefficient must be to the right of the 10 in x 10. O A coefficient must be less than 1. Correct! The coefficient is the number to the left of the 10 in x 10,and must be an integer between 1 and 10.