Jimmy walks at 60 meters per minute. It takes him 21 minutes to walk from home to school. If he runs at 180 meters per minute, how long does it take him to run from school to home

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.