Which best describes the term derived unit in si? 1.one of the metric base units that is the foundation of si 2.a conversion factor between base units 3.a specific combination of base units with its own name 4.a prefix multiplier for a base unit

A "derived unit" is a specific combination of base units with its own name. (3)

Examples:

Combination of base units                       Its own name

kilogram-meter / second²                                 Newton

Coulomb / second                                             Ampere

kilogram-meter² / second² (Newton-meter)     Joule

kilogram-meter² / second³ (Joule / sec)           Watt

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

50 inches should be the resultant vector