Two charges are placed along a line, with q1 to the left of q2. Somewhere along this line, to the left of charge 1, the electric field is zero. Based on this information, determine whether each of the following conditions is possible. a. Yes or No |q1| < |q2|
b. Yes or No q1 = q2
c. Yes or No q1 = ?q2
d. Yes or No The charges have the same sign.
e. Yes or No The charges have opposite signs.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.