How many hertz are in a UV light with a frequency of \( 2.3 \times 10^{9} \mathrm{MHz} \) ? Give your answer in proper scientific notation. \[ [?] \times 10^{[?]} \mathrm{Hz} \] Enter the coefficient in the green box and the exponent in the yellow box.

To convert megahertz (MHz) to hertz (Hz), we need to remember that 1 MHz = \( 10^6 \) Hz. Hence, to convert \( 2.3 \times 10^{9} \) MHz to Hz, we can calculate it as follows: \[ 2.3 \times 10^{9} \, \text{MHz} = 2.3 \times 10^{9} \times 10^{6} \, \text{Hz} = 2.3 \times 10^{15} \, \text{Hz} \] So, in proper scientific notation, the answer is: \[ 2.3 \times 10^{15} \mathrm{Hz} \] Coefficient: 2.3 Exponent: 15