3. Consider these 2 point charges separated 0.2 m. There are points somewhere along the line passing through where the electric potential (voltage) is zero. a. One is between the charges, how far is this point from 3 uC charges, how far is this point from 3 uC charge? b. Where is the second point? How far is this second point from the 3 uC charge? 0.2

1. A ball rolls off a table. +X X = 0 a. How long does it take to fall 0.80 meters to the floor? Show all of your work. b. How far does it travel horizontally while it's falling? Its initial horizontal velocity is 2.5 meters / second. Show all of your work. 2.5 m/s 0.80 m

Please show all work and do all parts.

Calculate the work done (in J) by an 80.0 kg man who pushes a crate 3.65 m up along a ramp that makes an angle of 20.0° with the horizontal. (See the figure below.) He exerts a force of 550 N on the crate parallel to the ramp and moves at a constant speed. Be certain to include the work he does on the crate and on his body to get up the ramp. F