A woman can read the large print in a newspaper only when it is at a distance of 65 cm or more from her eyes.

(a) Is she nearsighted (myopic) or farsighted (hyperopic), and what kind of lens is used in her glasses to correct her eyesight?
(b) What should be the refractive power (in diopters) of her glasses (worn 1.7 cm from the eyes), so she can read the newspaper at a distance of 25 cm from the eyes?

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

You would need to take a picture so i can see

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current