Apiano, violin, or guitar uses the resonance of a wooden soundboard to

a) amplify the sound
b) dampen the sound
c) raise the pitch
d) limit standing waves

i think a, but im not sure. !

How are calculation for velocity and speed different

Ireally need this answer sombody fast fast

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.