2.72 N
Explanation:
Step 1:
From the basic formula in electrostatics
F = E * q
where F = Force due to charges
E = Electric field strength
q = Charge
Step 2:
From the given question
q= 
E = 
F =
N
I believe the answer would be 4.5. because it wouldnt be c or d. and 2 seems too small.
Answer:
amplitude
Explanation:
sound travel and it amplifies