Dos cargas q1=2pc y q2=4pc estan separadas por una distancia de 6cm ¿con que fuerza se atraen?

Here we can use coulomb's law to find the force between two charges

As per coulombs law

]tex]F = \frac{kq_1q_2}{r^2}[/tex]

here we have

now by using the above equation we have

so here the force between two charges is of above magnitude and this will be repulsive force between them as both charges are of same sign.

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

b.transmitters send radio waves, and receivers capture radio waves.