What is it called when a sound wave is a measure of how many times an object vibrates per second

Asap ! which of the items listed below are public services commonly found in societies? select all that apply law enforcement public schools grocery store public water supply

Who was the last member of the stuart line whose death left britain without a clear successor? a. george i b. queen anne c. charles ii d. queen elizabeth

Which statement best describes how the first-person narration in fever 1793 engages readers? mattie's perspective on the city of philadelphia gives readers an understanding of why some residents are leaving for the country. mattie's perspective on the state of her family's business gives readers an understanding of the responsibility she feels. mattie's perspective on her grandfather's strong-headed opinions gives readers an understanding of the influence he has on her. mattie's perspective on the events of 1793 gives readers an understanding of the experiences and uneasiness of the time.