12. Kayaking A kayaker paddles upstream from camp to photograph a waterfall and returns. The kayaker's speed while traveling upstream and downstream is shown
below. What is the kayaker's speed in still water? What is the speed of the current?
4 mi/h
7 mi/h
BE

idk sry

step-by-step explanation:

they are simplified

step-by-step explanation:

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:

you divide them and then you get the answer i took this class this year

step-by-step explanation: