Pls check if my answer is correct ?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Are formed where bumps from two surfaces come into contact ?