Answer this question, its for my exams: sandy brooke purchased a sweater for $15.67, a pair of socks for $2.13, and a bracelet for $6.78. for all purchases she must pay the state sales tax of 7.5% and the county tax of 0.5%. what is the tax on her purchases? what is her total purchase price?

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: