div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=derry-area-school-district-you-can-tell-its-speed-if-you-know-the-air-temperaturehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Derry Area School DistrictΠyou can tell its speed if you know the air temperature or the speed of sound The period time for one vibration is T -2273 s f - 440 Hz The time loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220711115fe6a7cc7f818f23383d3b31html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=derry-area-school-district-you-can-tell-its-speed-if-you-know-the-air-temperaturehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Derry Area School DistrictΠyou can tell its speed if you know the air temperature or the speed of sound The period time for one vibration is T -2273 s f - 440 Hz The time loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220711115fe6a7cc7f818f23383d3b31html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=derry-area-school-district-you-can-tell-its-speed-if-you-know-the-air-temperaturehtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Derry Area School DistrictΠyou can tell its speed if you know the air temperature or the speed of sound The period time for one vibration is T -2273 s f - 440 Hz The time loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220711115fe6a7cc7f818f23383d3b31html5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=derry-area-school-district-you-can-tell-its-speed-if-you-know-the-air-temperaturehtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Derry Area School DistrictΠyou can tell its speed if you know the air temperature or the speed of sound The period time for one vibration is T -2273 s f - 440 Hz The time loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220711115fe6a7cc7f818f23383d3b31html5thumbnails4jpg width=140 height=200 divdiv
