Two point charges are located at two of the vertices of a right triangle, as shown in the figure. If a third charge -2q is brought from infinity and placed at the third vertex, what will its electric potential energy be (in Joules)?
Use the following values: a = 0.15 m; b=0.45 m, and q = 2.0 x 10-5C.
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Which type of microscope would allow the viewer to see ribosomes inside a cell?

=force × distance a. work b. velocity c. pressure d. momentum

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.