We have three identical metallic spheres A, B, C. Initially…

We have three identical metallic spheres A, B, C. Initially sphere A is charged with charge 3Q, while B and C are neutral. First, sphere A is brought into contact with sphere B and then separated from it. After that, sphere A is brought into contact with sphere C and then separated from it. Finally, sphere A is brought into contact with sphere B again, and then separated from it. What is the final charge of sphere A

A patient returns from surgery and is having incisional pain…

A patient returns from surgery and is having incisional pain. As part of your nursing assessment, you note that the patient is grimacing when he changes position. The patient’s grimace can be useful in the assessment and can be described in what manner?