Sonar is a device that uses reflected ultrasonic sound waves to measure underwater depths. If a sonar signal has a frequency of 100,000 Hz and and a wavelength of 0.015 m what is the speed of the sonal signal in water I NEED HELP PLSSS

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.