Sonar equipment sends sound wastes into deep water and measures what

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Ways that industry and agriculture use physical properties to separate substances