One of your authors was once involved in a research study where a newly developed pain drug was being tested. all participants completed a series of tasks intended to represent various types of somatic pain (e. g., a sharp, fast pain, a dull ache, and were asked to report how much pain they experienced during each task. the pain series was completed both during an initial visit to the lab, and during a second visit about a week later. prior to completing the tasks during the second visit, participants received either the new pain drug or a placebo. what primary ethical guidelines apply to this experiment? would any other guidelines apply if the study participants were made up of a group of patients actively receiving treatment for a pain disorder?

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.