  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 Tank. The idea of an armoured tracked vehicle that would provide protection from machines gun fire was first discussed by army officers in 1914. Two of the officers, Colonel Ernest Swinton and Colonel Maurice Hankey, both became convinced that it was possible to develop a fighting vehicle that could play an important role in the war.