If the half-life of a radioisotope is 250 years how much of a 96.0 gram sample will remain after 750 years

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus

The atoms in a have a definite volume, but move quickly enough to overcome the forces of attraction between them. a. solid b.liquid c.gas

The electric field strength between the plates of a simple air capacitor is equal to the voltage across the plates divided by the distance between them. when a voltage of 76.2 v is put across the plates of such a capacitor an electric field strength of 2.2 kv cm is measured. write an equation that will let you calculate the distance d between the plates. your equation should contain only symbols. be sure you define each symbol.