A 52 uC charge is placed at the origin .A second -18uC charge is placed 0.8 m to the left of the first charge. A third charge 6uC is placed 2m below the first charge. what is the electric fiel at point(-0,8.-2)​

If a clock aboard a space ship traveling at 0.900 c of the speed of light relative to earth chimes once at the beginning of the hour and again when it reads one hour later, how much time would an observer on earth say elapsed between the two chimes?

Rohit is trying to tune an instrument

What is the role of lenses in microscopy?