What is the period of a wave traveling 5 m/s if its wavelength is 20 m/s

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.