A scientist is giving a demonstration with a Van de Graaff generator in a class about electrostatics. The scientist can detect t
he type of charge on the Van de Graaff generator by ____________________________________________. A) bringing a positively charged balloon near it.
B) seeing if it picks up bits of paper from a surface.
C) touching it with a metallic rod that conducts charge.
D) testing if it attracts a neutral sphere made of plastic.
This is the correct answer because is the only option in which the object has a charge (a positive one in this case). That means when the scientist brings a positively charged balloon near the hollow metal globe on the top of the Van de Graaff generator a repulsion is seen it because the globe is positively charged too.
This matter spread out around theuniverse with no structure. But each little bit of matter exerted the force of gravity on each other little bit. Gravity is the only type of force connected with <span>the Big Bang as it is a basic force that was to create our world in th way we can see and discover it today.</span>
