Sound wave travels through the air at 320 M/S and has a frequency of 150 HZ what is the wavelength of this wave

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Write the correct abbreviation for each metric unit

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?