Question 4: (1 point) A charge + 136 nC sits at the origin (x,y = 0,0). You bring in a series 4 charges each of the same + 136 nC charge from a distance very far away. The charges are brought to positions (in x,y format) (-2.9,-2.9), (-2.9,2.9), (2.9,2.9), (2.9,-2.9) (where the distances are in cm) and fixed in place. The central charge is then released. What is it's kinetic energy when it is far away from the charge distribution. Question 5: (1 point) In a simple "Bohr model" of a hydrogen atom, an electron is "usually" found a distance of 0.0529 nm away from the proton. What is the magnitude of the potential energy felt by such an electron? Express your answer in units of electron Volt (eV). An ev is a unit of energy which can be converted to joules. ev An electron in such an atom will also have a kinetic energy. This kinetic energy can be calculated to be 13.6 ev. What is the average speed of the electron in the hydrogen atom? m/s Question 6: (1 point) Two equal charges of charge 153 nC are on a line a distance 1.2 cm apart. How much work does it take to bring a third positive charge of 153 nC from very far away to the midpoint between the two charges? If you now release the middle charge what will its kinetic energy be when it has moved "very" far away from the other two charges