you are standing at the midpoint between two speakers, a distance d away from each. the speakers are playing the exact same sound of frequency 170 hz in phase with each other. describe what happens when you walk 1.5 m directly toward one of the speakers. assume the speed of sound is 340 m/s. also assume you can't hear any sounds except those produced by the speakers.

Assessment includes a. interviews, recorded conversations, videos, frequency counts, and time samples. b. formal standardized tests and developmental screening tools. c. various types of documented observations, documentation of child work, checklists, rating scales, and standardized tests. d. anecdotal notes, narratives or daily records, daily health checks, and teacher observation checklists.

Alaser tag arena sells two types of memberships. one package costs $325 for one year of membership with an unlimited number of visits. the second package has $125 enrollment fee, includes five free visits, and costs and additional $8 per visit after the first five. how many visits would a person need to use for each type of membership to cost the same amount over a one-year period?

Why has there been such a large increase in theft and other crimes in the u. s