Sanjay rides his bike to work 15 kilometers in two days, he works five days per week. how many weeks will sanjay need to ride his bike to work in order to ride 150 kilometers? a: 4 weeks b: 7.5 weeks c: 10 weeks d: 20 weeks

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: