Without his glasses, Isaac can see objects clearly only if they are less than 4.7 m from his eyes. Required:
What focal length glasses worn 2.1 cmcm from his eyes will allow Isaac to see distant objects clearly?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Drag each tile to the correct box. tiles bra i sequence

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.