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1) a cathode-ray tube is a type of ______ tube.
2) an n-type semiconductor is made by adding a trace amount of phosphorus to _____.
3) Communication devices use ________ circuits known as _______ to make them more portable, reliable, and affordable.
4) what solid-state component in a mobile phone maintains proper voltage levels in the circuits? a. transistors b. capacitors c. diodes d. microchips
5.) the electric field around a positive charge points _______ the charge.
6) Electric force is ________ proportional to the amount of charge and _______ proportional to the square of the distance between the charges.

it is okay if you can only answer a few
please only answer if you have specific answers :)

Respuesta :

egenriether
1) Vacuum tube
2) silicon 
3) integrated, I.C.s
4) this one is worded weird. Transistors are the main part of voltage regulators but they use (require) diodes and capacitors, too.  And they are all put onto a microchip in the power distribution section.  sorry for the long explanation.
5) away from
6) directly, inversely

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