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Of the four fundamental forces in the Universe, which one is the weakest? Gravity Electrical Strong Nuclear Weak Nuclear	If the electrical force between two charges is 10.0 N when they are .05 meters away, what is the force when they are .10 meters away? 5.0 N 8.0 N 2.5 N 4.5 N Not Enough Info	Find the force between one electron and one proton .00001 meters apart. .0005 N 7 N 1.2(10^-12) N .007 N .1 N	From the previous problem, which one would have the greater acceleration when they were let go? Electron Proton Same	Why doesn't the electron in an atom fall towards the nucleus, even though the nucleus has a proton attracting it? Centrifugal Force Centripetal Force Newton's First Law Newton's Third Law
Find the electric field surrounding a nuclues with three protons .0002 meters away. .015 N/C .46 N/C .036 N/C .010 N/C .0001 N/C	Find where the electric field is zero between one proton .3 meters away from four protons. The answer is to the right of the one proton. .15 m .20 m .30 m .10 m .01 m	If an electron was placed at that point in the last problem, would it move? Yes No	If your feet was touching the ground and your hand was touching a fence with a 200 V potential, what direction would the electrons move? Down to Ground Up to Fence They Wouldn't	Would electrons move through your body if your hands and feet were touching a 10,000 V fence Yes No Some