Dry air will break down if the electric field exceeds about 3.0×106v/m. part a what amount of charge can be placed on a capacitor if the area of each plate is 5.5 cm2 ? express your answer using two significant figures.

The charge between the plates is  

Data;

The electric field between the plates is

The charge on a capacitor is given as

Let's substitute the values and solve for the charge on the capacitor

From the calculations above, the charge between the plates is

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diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg