Determine Which point of concurrency is most appropriate An artist is building a mobile with several metal triangles of various sizes. The to
are connected using steel rods, and the rods are welded onto each triangle at a point
that would allow the triangle to balance horizontally.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

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: