A certain instant camera determines the distance to the subject by sending out a sound wave and measuring the time needed for the echo to return to the camera. How long would it take the sound wave to return to the camera if the subject were 1.00 m away?

how do you expect people to write a full essay for you and only get 13 pt you need to give more dude make a change

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

what is the actual question though?

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.