Suppose you want to search for brown dwarfs using a space telescope. will you design your telescope to detect light in the ultraviolet or the infrared part of the spectrum? why?

infrared part of the spectrum

Explanation:

brown dwarfs are relatively cool and have temperatures of about 2000 K emitting their light in the infrared and practically none in the ultraviolet part of the spectrum.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)