Four charges are at the corners of a square, with B and C on opposite corners. Charges A and D, on the other two corners, have equal charge, while both B and C have a charge of 1.0 C. What is the charge on A so that the force on B is zero?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.