The diameter of earth's orbit around the sun is approximately 186 million miles. looking at a star from the two points on the orbit which are furthest apart, the lines of sight to the star from an angle of 2 degrees. how far away is this star from the earth?

5

10

15

20

25

30

35

40

45

50

55

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: