Razonar la veracidad o falsedad de la siguiente afirmación: dos esferas de igual carga se repelen con una fuerza F. Si duplicamos el valor de las cargas de cada una de las esferas y tambien duplicamos la distancia que las separa, el valor F de la fuerza no varia

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

How is the gravitational force related to the distance between two objects?

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio