  The electron and the proton have a negative electrostatic charge and a positive electrostatic charge respectively. Each charge-and the force associated with that unit of charge-is constant-and equal.(The electron and proton have equal, but oppositely polarized, electrostatic charges.) But there is more. The electron and the proton have a negative electrostatic charge and a positive electrostatic charge respectively. Each charge-and the force associated with that unit of charge-is constant-and equal.
The start of life for the tank did not bode well. The first model came off the factory floor on September 8th 1915. On September 10th, its track came off. The same happened on September 19th when government officials were watching.
Little Willie. The production of Little Willie by Lieutenant Walter G. Wilson and William Tritton in the late summer of 1915 revealled several technical problems. The two men immediately began work on an improved tank. Mark I, nicknamed Mother, was much longer than the first tank they made