The first resonance of a resonance tube is 18.8m, and the second resonance position is 57.3cm. Given that the velocity of sound in air is 340m/s. what is the air colomn into vibration​

Avillage levied property taxes of $910,000 for calendar year 2019 on january 1, 2019 and immediately set up an allowance of $10,000 for uncollectible taxes. the village collected $870,000 in cash during 2019. it expected to collect $22,000 of the unpaid taxes during the first 60 days of 2020 and an additional $8,000 during the rest of 2020. how much should the village recognize as property tax revenues in its 2019 general fund financial statements? a) $870,000 b) $892,000 c) $900,000 d) $910,000