A spring with a spring constant of 1.8×10 to the second power Newton/meters is attached to a 1.5 KG mass and then so in large

Why do electron microscopes have higher resolving power than light microscopes?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Adiagram show how a converging lens can produce a real image and virtual image