Which of the following shows the correct order of the numbers below? (1/2 ) 2 , 2/3 , 0.45 a. (1/2 ) 2 < 0.45 < 2/3 b. (1/2 ) 2 < 2/3 < 0.45 c. 0.45 < ( 1/2 ) 2 < 2/3

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

there were only 2 presidents that were under the age of 45. theodore roosevelt, and jfk, that makes 5%